State v. Sexton

Annotate this Case
State v. Sexton (2003-331); 180 Vt. 25; 904 A.2d 1133

2006 VT 55

[Filed 09-June-2006]


       NOTICE:  This opinion is subject to motions for reargument under
  V.R.A.P. 40 as well as formal revision before publication in the Vermont
  Reports.  Readers are requested to notify the Reporter of Decisions,
  Vermont Supreme Court, 109 State Street, Montpelier, Vermont 05609-0801 of
  any errors in order that corrections may be made before this opinion goes
  to press.


                                 2006 VT 55

                                No. 2003-331
    

  State of Vermont                               Supreme Court

                                                 On Appeal from
       v.                                        District Court of Vermont,
                                                 Unit No. 2, Chittenden Circuit

  Jacob A. Sexton                                June Term, 2004


  James R. Crucitti, J.

  Robert Simpson, Chittenden County State's Attorney, and Pamela Hall
    Johnson, Deputy State's Attorney, Burlington, for Plaintiff-Appellant.

  Matthew F. Valerio, Defender General, and Anna Saxman, Deputy Defender
    General, Montpelier, and William A. Nelson (On the Brief), Middlebury, for
    Defendant-Appellee.


  PRESENT:  Amestoy, C.J.,(FN1) Dooley, Johnson, Skoglund and Reiber, JJ.

       ¶  1.  REIBER, J.   We accepted this interlocutory appeal to
  consider whether a defendant charged with murder may assert either the
  defense of diminished capacity to reduce the offense to manslaughter, or
  insanity to excuse the offense entirely, where the voluntary use of illegal
  drugs was an essential causal factor in the defendant's psychotic state at
  the time of the offense.  Consistent with the law of this and other states,
  we conclude that a defendant in these circumstances  may argue for a
  reduction of the offense based upon an inability to form the requisite
  intent to commit murder, but may not be relieved entirely of responsibility
  for his or her criminal acts.  Accordingly, as explained more fully below,
  we affirm in part, reverse in part, and remand for further proceedings. 
   
       ¶  2.  Although this appeal is from a pretrial ruling, the material
  facts are largely undisputed.  On the night of September 27, 2000, police
  found a Japanese exchange student, Atsuko Ikeda, lying in the street in
  Winooski.  Ikeda had suffered serious injuries, and died shortly after
  transport to the hospital.  During the ensuing investigation, defendant
  walked onto the crime scene and lay down on the street in front of a police
  cruiser.  Upon questioning by the police, defendant reportedly said, "Just
  cuff me, I know I did something bad, I just don't know what."  Defendant
  was charged with Ikeda's murder.

       ¶  3.  While in custody, defendant informed the police that, on the
  day in question, he had killed his cat and then gone outside intending to
  kill a person.  He recalled lunging at a woman passing on a bicycle (later
  identified as Ikeda) and then beating her repeatedly until she stopped
  moving.  Defendant later told psychiatrists that he had taken a variety of
  illegal drugs during the six months preceding the incident.  Defendant
  recounted that for about two months, in July and August 2000, he took many
  "hits" of LSD, and that his last reported use of LSD was two to three weeks
  before the September killing.  Defendant explained that on the night of the
  incident he felt that he needed to kill people and "gather their souls."  
   
       ¶  4.  At defendant's arraignment on a charge of second-degree murder,
  the court ordered a psychiatric evaluation of defendant's competency and
  sanity. (FN2)  In December 2000, Dr. Robert Linder, the court-appointed
  psychiatrist, filed a lengthy report with the court, ultimately concluding
  that defendant was insane at the time of the offense.  The conclusion was
  based on a series of interviews with defendant and others, defendant's
  psychiatric and family history, and a battery of psychological tests from
  which Dr. Linder inferred that defendant was in a florid psychotic state at
  the time of the crime that prevented him from appreciating the wrongfulness
  of his conduct or conforming his conduct to the requirements of law.  Dr.
  Linder's preliminary diagnosis was that defendant suffered from either a
  previously undiagnosed mental disease involving a schizophrenic disorder,
  or a substance-induced psychosis.  At a later deposition in 2002, Dr.
  Linder noted that defendant's psychotic thoughts had largely resolved and
  that he had returned to his "usual self," suggesting a primary diagnosis of
  schizophrenoform disorder, in which psychotic symptoms last between one to
  six months.
    
       ¶  5.  In his December 2000 report, Dr. Linder indicated that
  defendant's mental state had improved over the course of their interviews
  and that he appeared to be competent to stand trial.  Based on the report,
  the parties stipulated to defendant's competency, and the court scheduled a
  hospitalization hearing.  Following the hearing, the court found that
  defendant was a person in need of treatment and ordered him committed to
  the Vermont State Hospital.  
  
       ¶  6.  In February 2001, defendant notified the State that he intended
  to present expert testimony in support of an insanity defense, and the
  court granted the State's motion for an independent psychiatric evaluation. 
  In April, the State's psychiatrist, Dr. Albert Drukteinis, filed a report
  concurring in Dr. Linder's opinion that defendant was psychotic at the time
  of the offense, but concluding that it was caused solely by defendant's
  voluntary use of illegal drugs.  Although Dr. Drukteinis observed signs of
  a personality disorder with narcissistic features, he found  no evidence
  that defendant suffered from a major thought disorder such as
  schizophrenia.  At a subsequent hearing on the State's motion to amend
  defendant's conditions of release, defendant's treating psychiatrist, Dr.
  Margaret Bolton, also diagnosed defendant as having a personality disorder,
  and agreed that defendant did not suffer from any major mental illness such
  as schizophrenia, as reported by Dr. Linder, or borderline personality, as
  suggested in an earlier report by Dr. Bertold Francke.  In June 2002, the
  court transferred custody of defendant to the Department of Corrections
  after concluding that his continued hospitalization was no longer
  justified.
   
       ¶  7.  In July 2002, the State filed a motion in limine seeking to
  prevent defendant from presenting an insanity defense at trial, arguing
  that Vermont law does not recognize temporary insanity caused by the
  voluntary use of drugs.  The State also moved to preclude a diminished
  capacity defense, asserting that second-degree murder based on wanton
  disregard for the likelihood that one's actions would naturally cause death
  or great bodily harm is a general intent crime to which the defense has no
  application.  After the parties submitted supplemental briefing, the court
  requested that defendant provide a concise statement of his theory as to
  the insanity defense. Defendant, in response, submitted a supplemental
  letter from Dr. Linder, reaffirming his earlier opinion that defendant was
  in the midst of a severe psychotic episode at the time of the offense,
  resulting from either a substance-induced psychosis or an underlying mental
  illness, such as schizophrenoform disorder, caused by the ingestion of
  illegal drugs in combination with an underlying psychological vulnerability
  that predisposed him to such a reaction.   

       ¶  8.  In March 2003, the court issued a written decision, concluding
  that second-degree murder based on wanton disregard of the likelihood that
  one's conduct would naturally cause death or great bodily harm is a
  specific intent crime in Vermont.  Therefore, it held that defendant was
  entitled to rely on the defense of diminished capacity due to voluntary
  intoxication.  The following June, the court issued a second decision,
  concluding that defendant was also entitled to argue that he was legally
  insane at the time of the killing.  Although the court ruled that "an
  individual whose mental state is altered solely because of the consumption
  and abuse of illegal drugs" may not assert an insanity defense, it found
  that one whose consumption of illegal drugs activates a latent mental
  disease or defect resulting in a psychotic reaction is entitled to a
  complete defense to the crime charged, unless the defendant knew or had
  reason to know that the drugs would elicit such a reaction.

       ¶  9.  The State moved for permission to pursue an interlocutory
  appeal of both orders.  The trial court granted the motions, certifying the
  following three questions, which we accepted for review: 

    (1) Does the issue of diminished capacity caused by voluntary
    intoxication by means of illegal drugs apply to a charge of second
    degree murder based upon wanton disregard of the likelihood that
    one's conduct would naturally cause death or great bodily harm, so
    as to reduce the offense to voluntary manslaughter?
     
    (2) Does the issue of diminished capacity caused by a combination
    of pre-existing mental condition and the effects of voluntary
    consumption of illegal drugs apply to a charge of second degree
    murder based upon wanton disregard of the likelihood that one's
    conduct would naturally cause death or great bodily harm, so as to
    reduce the offense to voluntary manslaughter?

    (3) Is the following a correct statement of Vermont law:

          The term "mental disease or defect" as used in 13 V.S.A. § 4801
        includes a mental condition caused by the voluntary consumption of
        illegal drugs if the drugs activate a latent mental disease or
        defect, and as a result of that mental disease or defect the
        individual has lost the capacity to appreciate the criminality of
        his conduct, or has lost the capacity to conform his conduct to
        the requirements of the law, unless the individual knew or had
        reason to know that the drug would activate the illness.  The
        resulting disease or defect must be recognized medically and must
        exist at the time of the offense, independent of any temporary
        intoxication or high that the drugs caused.  It does not  matter
        that the mental disease or defect was not permanent, if the
        condition lasted for a substantial time after the intoxicating
        effects of the illegal drugs had worn off.  A mental disease or
        defect cannot be caused solely by the consumption of an illegal
        drug.


                                     I.


       ¶  10.  This interlocutory appeal presents questions of law, and our
  review is therefore nondeferential and plenary.  State v. Koch, 169 Vt.
  109, 112, 730 A.2d 577, 580 (1999).

       ¶  11.   The first two certified questions ask us to reexamine the
  common law of diminished capacity.  The State suggests that our recent
  decisions have made such a defense unavailable to a defendant charged with
  second-degree murder based on a wanton disregard of the likelihood that the
  defendant's conduct would naturally cause death or great bodily harm.  We
  disagree, and affirm the district court's ruling.

       ¶  12.  Title 13 V.S.A. § 2301 defines the degrees of murder as
  follows:

    Murder committed by means of poison, or by lying in wait, or by
    wilful, deliberate and premeditated killing, or committed in
    perpetrating or attempting to perpetrate arson, sexual assault,
    aggravated sexual assault, robbery or burglary, shall be murder in
    the first degree.  All other kinds of murder shall be murder in
    the second degree.

  This skeletal statutory definition has existed largely unchanged since
  1869, and the Legislature has left it to this Court to flesh out the
  elements of second-degree murder.  State v. Johnson, 158 Vt. 508, 517, 615 A.2d 132, 137 (1992).  We have distinguished between first- and
  second-degree murder based on the presence or absence of "willfulness,
  deliberation and premeditation,"  State v. Hatcher, 167 Vt. 338, 343, 706 A.2d 429, 432 (1997), but have traditionally held that a person must act
  with "malice" to be guilty of either degree of  murder.  State v. Long, 95
  Vt. 485, 496, 115 A. 734, 739 (1922).  Our more recent decisions have
  concluded that the term "malice" is overly confusing, however, and we have
  directed the trial courts to instruct jurors on the specific mental states
  requisite to a particular charge.  See, e.g., Johnson, 158 Vt. at 519, 615 A.2d  at 138.  To this end, we have reiterated that the crime of
  second-degree murder requires " 'an intention to kill, an intention to do
  great bodily harm, or a wanton disregard of the likelihood that one's
  behavior may naturally cause death or great bodily harm.' "  Hatcher, 167
  Vt. at 344, 706 A.2d  at 433 (quoting State v. Doucette, 143 Vt. 573, 582,
  470 A.2d 676, 682 (1983)). 
   
       ¶  13.  We have long held that diminished capacity due either to
  voluntary intoxication, In re Plante, 171 Vt. 310, 317, 762 A.2d 873, 878
  (2000), or to a mental disability, State v. Wheelock, 158 Vt. 302, 311, 609 A.2d 972, 978 (1992), can mitigate murder to voluntary manslaughter.  The
  traditional rationale supporting a diminished capacity defense posits that
  a defendant's decreased faculties or awareness may preclude the specific
  intent to commit murder, thus reducing the crime to voluntary manslaughter. 
  State v. Pelican, 160 Vt. 536, 539, 632 A.2d 24, 26 (1993).   In State v.
  Blish, 172 Vt. 265, 272, 776 A.2d 380, 386 (2001), however, we announced
  that "the intent component of voluntary manslaughter is the same as that
  required for second degree murder."  We went on to state that the "critical
  factor distinguishing second degree murder from voluntary manslaughter is
  not the mental state of the actor, but the existence of mitigating
  circumstances."  Id.  Thus, we adopted the position that " 'the correct way
  of explaining [diminished capacity] is as a defense mitigating the degree
  of homicide from murder to voluntary manslaughter.' "  Id. at 270, 776 A.2d 
  at 385 (quoting Pelican, 160 Vt. at 543, 632 A.2d  at 29 (Morse, J.,
  concurring)).  


       ¶  14.  The State argues that our efforts to modernize the language of
  homicide have actually created two distinct classifications of
  second-degree murder:  the first applicable to a defendant who intended to
  kill his victim, and the second applicable to a defendant who acted with
  wanton disregard for the consequences of his or her actions.  The State
  contends that second-degree murder based on "wanton disregard" is actually
  a general intent crime, to which the diminished capacity defense has no
  application.  We are not persuaded.  As discussed above, second-degree
  murder requires either an intent to kill or do great bodily harm, or "a
  wanton disregard of the likelihood that one's behavior may naturally cause
  death or great bodily harm."  Hatcher, 167 Vt. at 344, 706 A.2d  at 433
  (quotations omitted).  Although we originally presented this tripartite
  definition as an explication of the elusive term "malice," which has long
  been the distinct mens rea-the specific intent-separating murder from
  manslaughter,  Doucette, 143 Vt. at 582, 470 A.2d  at 682, the State now
  contends that "wanton disregard" actually denotes a subset of recklessness,
  or general intent.  Despite the historical connection between the term
  "wanton" and the term "malice," (FN3) the State contends that a combined
  reading of several recent decisions indicates that we now consider "wanton
  disregard" a species of general intent.
   
       ¶  15.  The first step in the State's argument relies on our recent
  observation that the phrase "wanton disregard" describes a mental state
  equivalent to "extreme indifference."  Blish, 172 Vt. at 272-73, 776 A.2d 
  at 386.  The State next points out that we have held that diminished
  capacity due to voluntary intoxication is no defense to a charge of
  aggravated assault when the defendant is accused of acting recklessly
  "under circumstances manifesting extreme indifference to the value of human
  life." State v. Allen, 169 Vt. 615, 616, 738 A.2d 113, 114 (1999) (mem.)
  (citing 13 V.S.A. § 1024(a)(1)) (emphasis added).  In these two steps,
  then, the State contends that "wanton disregard" is equivalent to "extreme
  indifference," which, in turn, is a species of recklessness to which the
  diminished capacity defense does not apply.  At the very least, the State
  argues that Allen creates an unexplained split in the law of "extreme
  indifference," whereby diminished capacity due to voluntary intoxication
  applies to murder, but not to some types of aggravated assault.

       ¶  16.  The reason for this split, however, is that the Legislature
  has acted to modernize the statutory language defining aggravated assault,
  while it has chosen to leave the common-law definition of second-degree
  murder undisturbed.  Compare 13 V.S.A. § 1024(a)(1) (amended in 1972) with
  13 V.S.A. § 2301 (substantially unchanged since 1869).  The mental state
  defined in § 1024(a)(1)-"purposely, knowingly or recklessly under
  circumstances manifesting extreme indifference to the value of human
  life"-closely reflects the terminology of the Model Penal Code.  Model
  Penal Code § 2.02(2) (1985); see also State v. Trombley, 174 Vt. 459, 461,
  807 A.2d 400, 404 (2002) (mem.) (interpreting § 1024 pursuant to the Model
  Penal Code).  The Model Code moves away from the old distinction between
  specific and general intent, and does not recognize intoxication as a
  defense to crimes that require only a showing of recklessness.  Model Penal
  Code § 2.08(2).  Because the assault language in our statute closely
  mirrors the Code, we essentially adopted the Code's position on diminished
  capacity.  Acknowledging the three separate mental states delineated in the
  statute, we concluded that diminished capacity would apply to assaults
  committed purposely or knowingly, but held that the defense of voluntary
  intoxication is not available when a defendant acts recklessly.  Allen, 169
  Vt. at 616, 738 A.2d. at 114.  
   
       ¶  17.  The Legislature has not modernized the statutory definition
  of second-degree murder, however, which remains a creature of the common
  law, and therefore is subject to the traditional distinction between
  specific and general intent.  The common law allows the defense of
  diminished capacity-due either to intoxication or mental defect-to specific
  intent crimes, and we have consistently made the defense available to
  negate the specific intent necessary to commit second-degree murder. 
  State v. Shaw, 168 Vt. 412, 416, 721 A.2d 486, 490 (1998).  All three
  prongs of the mens rea required for second-degree murder-intent to kill,
  intent to cause great bodily harm, or wanton disregard of the likelihood
  that one's conduct would naturally cause death or great bodily harm-simply
  define the term "malice," Doucette, 143 Vt. at 582, 470 A.2d  at 682, which
  has always been a species of specific intent. The State's arguments are
  therefore unavailing, and defendant is entitled to present evidence that
  his diminished capacity, due either to voluntary intoxication or mental
  disability, prevented him from forming the specific intent to commit
  second-degree murder. (FN4)
    
                                     II.


       ¶  18.     The final certified question asks us to determine whether
  defendant can present an insanity defense based on his claim that the
  ingestion of illegal drugs activated a latent mental disease or defect
  resulting in a psychotic reaction that rendered him unable to appreciate
  the criminality of his conduct or conform his conduct to the requirements
  of law.   
   
       ¶  19.  Unlike diminished capacity, which mitigates a defendant's
  culpability, legal insanity is a complete defense to any crime.  State v.
  Messier, 145 Vt. 622, 628, 497 A.2d 740, 743 (1985).  The insanity defense
  has a long history at common law.  See B. Elkins, Idaho's Repeal of the
  Insanity Defense: What Are We Trying to Prove?, 31 Idaho L. Rev. 151, 161
  (1994) (discussing the historical roots of the insanity defense).  The
  modern standard dates to the early nineteenth-century House of Lords'
  decision in  M'Naghten's Case, 8 Eng. Rep. 718, 722 (H.L. 1843), which
  looked to whether the defendant knew the nature or quality of his actions,
  or understood that they were wrong.  The standard has since evolved through
  a variety of permutations, including the so-called Durham test, from Durham
  v. United States, 214 F.2d 862 (D.C. Cir. 1954), which asked whether the
  defendant's crime  "was the product of mental disease or mental defect,"
  id. at 874, which in turn influenced the insanity standard set forth in the
  Model Penal Code § 4.01.  The latter forms the governing standard in most
  of the federal circuits and roughly half the states, including Vermont. 
  Id. § 4.01, cmt. at 175-76.  Our definition is set forth in 13 V.S.A. §
  4801(a)(1), as follows:

    A person is not responsible for criminal conduct if at the time of
    such conduct as a result of mental disease or defect he lacks
    adequate capacity either to appreciate the criminality of his
    conduct or to conform his conduct to the requirements of law.

       ¶  20.  Although a separate section of the Model Penal Code provides
  that "[i]ntoxication does not, in itself, constitute mental disease within
  the meaning of Section 4.01 [the insanity section]," Model Penal Code §
  2.08(3), we have not adopted this provision in Vermont, and our insanity
  statute does not define "mental disease or defect" other than to exclude
  "an abnormality manifested only by repeated criminal or otherwise
  anti-social conduct," and to include "congenital and traumatic mental
  conditions as well as disease." 13 V.S.A. § 4801(a)(2).   Nevertheless, we
  have long held that, while voluntary intoxication may mitigate the crime
  charged, it will not operate as a total bar to criminal responsibility. 
  Wheelock, 158 Vt. at 309, 609 A.2d  at 976.  This is the rule nationally as
  well.  See P. Hassman, Annotation, Effect of Voluntary Drug Intoxication
  Upon Criminal Responsibility, 73 A.L.R.3d 98, 121 (1976) ("[I]t is
  generally accepted that voluntary drug intoxication may not be used to
  completely excuse one from criminal responsibility.").    

       ¶  21.  While the mental state resulting from extreme intoxication may
  in some cases be  "tantamount to insanity," L. Tiffany, The Drunk, the
  Insane, and the Criminal Courts: Deciding What to Make of Self-Induced
  Insanity, 69 Wash. U. L.Q. 221, 222 (1991), its origin as a self-induced
  impairment fundamentally distinguishes it for most courts from a naturally
  occurring mental disease or defect that leads to insanity.  See  J.
  Dressler, Understanding Criminal Law § 24.05[A], at 328-29 (3d ed. 2001). 
  Indeed, it is universally recognized that a condition of insanity brought
  about by an individual's voluntary use of alcohol or drugs will not relieve
  the actor of criminal responsibility for his or her acts. See W. LaFave,
  Criminal Law § 9.5(h), at 481-82 (4th ed. 2003).  

       ¶  22.  The only generally recognized exception to this rule is the
  doctrine known as "fixed" or "settled" insanity. (FN5)  Nearly every court
  and commentator that has addressed this doctrine has defined it as a
  permanent or chronic mental disorder caused by the habitual and long-term
  abuse of drugs or  alcohol.  See, e.g., A. Levine, Note, Denying the
  Settled Insanity Defense: Another Necessary Step in Dealing with Drug and
  Alcohol Abuse, 78 B.U. L. Rev. 75, 78 (1998) ("The long-term, consistent
  abuse of drugs or alcohol may result in permanent mental disorders that are
  symptomatically and organically similar to mental disorders caused by brain
  disease.  Courts have labeled this condition as 'fixed' or 'settled'
  insanity, because the disorder remains even though the defendant is not
  under the influence of the intoxicants."); Tiffany, supra, at 225 ("the
  courts will recognize even a 'voluntarily contracted madness' as insanity
  if it has become permanent as in the case of 'fixed' or 'settled' insanity,
  even though it has its origins in alcohol or other drug abuse");  J.
  Dressler, supra, § 24.05[b], at 329 ("Habitual use of intoxicants can
  result in permanent brain damage, resulting in a substance-induced mental
  disorder that persists, i.e., the disorder remains even when the actor is
  not under the influence of intoxicants."); People v. Whitehead, 525 N.E.2d 1084, 1087 (Ill. App. Ct. 1988) (insanity defense resulting from drug use
  is not available "absent a mental disease or defect traceable to chronic or
  habitual drug use and resulting in a permanent kind of insanity"); see
  generally R.W. Gascoyne, Annotation, Modern Status of the Rules as to
  Voluntary Intoxication as Defense to Criminal Charge, 8 A.L.R.3d 1236
  (1966) (collecting cases).
                                                          
       ¶  23.  Scholars have traced the origins of the settled insanity
  defense in this country to the mid-nineteenth century when courts first
  considered the culpability of chronic alcoholics for crimes committed in
  the throes of acute alcohol-induced psychoses, typically marked by
  hallucinations and paranoid delusions.  See generally Levine, supra, at 87
  (noting that "[a] Tennessee state court first recognized the rarely invoked
  doctrine of settled insanity in 1850"); Note, Intoxication as a Criminal
  Defense, 55 Colum. L. Rev. 1210, 1219 n.66 (1955) (citing early decisions
  that recognized settled insanity defense in cases of "delirium tremens . .
  .  a phenomenon brought about by alcoholic abuse over many years-6 to 10
  years of heavy drinking"); Am. Psychiatric Ass'n, Diagnostic and
  Statistical Manual of Mental Disorders 153 (4th ed. 1994) (observing that
  "Substance-Induced Persisting Dementia" generally originates from "a
  pattern of prolonged and heavy substance use" with symptoms that "persist
  long after use of the substance has stopped," and is generally
  characterized by "an insidious onset and slow progression" so that it is
  "rarely" seen in persons under 20). (FN6)     
   
       ¶  24.  From its inception to the present, the settled insanity
  doctrine has been consistently characterized as a state of mind resulting
  from "long-continued," "habitual," "prolonged," or "chronic" alcohol or
  drug abuse leading to a more or less permanent or "fixed" state of
  insanity.   For an illustrative sample of older decisions, see, e.g.,
  People v. Travers, 26 P. 88, 91 (Cal. 1891) ("[S]ettled insanity produced
  by long-continued intoxication, affects responsibility in the  same way as
  insanity produced by any other cause"); Fisher v. State, 64 Ind. 435, 440
  (1878) (recognizing settled insanity defense "where the habit of
  intoxication, though voluntary, has been long continued, and has produced
  disease, which has perverted or destroyed the mental faculties of the
  accused"); State v. Riley, 13 S.W. 1063, 1064 (Mo. 1890) (holding that
  "long-continued habits of intemperance, producing permanent mental disease
  amounting to insanity" may relieve defendant of criminal responsibility);
  Cheadle v. State, 149 P. 919, 922 (Okla. Crim. App. 1915) (recognizing
  settled insanity due to "excessive and long-continued indulgence in
  alcoholic liquors, technically called, 'delirium tremens' "); State v.
  Kidwell, 9 S.E. 494, 495 (W. Va. 1907) (recognizing defense of settled
  insanity "superinduced by habitual and long continued intoxication" ).  For
  more recent cases illustrating the same principle, see, e.g., Evans v.
  State, 645 P.2d 155, 158 (Alaska 1982) (recognizing insanity defense for
  "alcoholic psychosis, such as delirium tremens, resulting from
  long-continued habits of excessive drinking");  Kiley v. State, 860 So. 2d 509, 510 n.3 (Fla. Dist. Ct. App. 2003) ("[T]he defendant must show that
  his long term and continued use of intoxicants produced a fixed and settled
  frenzy or insanity either permanent or intermittent.") (quotation omitted);
  State v. Clokey, 364 P.2d 159, 164 (Idaho 1961) (upholding instruction
  defining settled insanity as "produced by long continued intoxication");
  State v. Smith, 490 P.2d 1262, 1264 (Or. 1971) (recognizing insanity
  defense where "excessive and long-continued use of intoxicants produces a
  mental condition of insanity, permanent or intermittent") (quotations
  omitted); Herbin v. Commonwealth, 503 S.E.2d 226, 231 (Va. Ct. App. 1998)
  (recognizing settled insanity resulting from "long-term and severe drug
  abuse").
          
       ¶  25.  The underlying rationale for the settled insanity doctrine is
  generally explained as an acknowledgment of "the futility of punishment,
  since the defective mental state is permanent,"  Tiffany, supra, at 225
  n.16, or, more commonly, as a compassionate concession that at some point a
  person's earlier voluntary decisions become so temporally and "morally
  remote" that the cause of the offense can reasonably be ascribed to the
  resulting insanity rather than the use of intoxicants.   Dressler, supra, §
  24.05[B], at 330; see also Note, Settled Insanity is Not a Defense:  Has
  the Colorado Supreme Court Gone Crazy? Bieber v. People, 43 U. Kan. L. Rev.
  259, 270 (1994) ("Proponents of a settled insanity defense believe the
  initial choice to use drugs to be too remote in time to hold a person
  accountable for it once that person eventually suffers a drug-induced brain
  disorder.").  As the celebrated American jurist and scholar Joseph Story,
  in one of the earliest reported cases on the subject, observed: "[T]he
  question made at the bar is, whether insanity, whose remote cause is
  habitual drunkenness, is, or is not, an excuse in a court of law for a
  homicide committed by the party, while so insane, but not at the time
  intoxicated or under the influence of liquor."  United States v. Drew, 25 F. Cas. 913 (D. Mass. 1828) (No. 14,993) (emphasis added); see also State
  v. Stark, 32 S. C. L. (1 Strob.) 479 (S.C. Ct. App. 1847) (acknowledging
  that insanity defense may lie where defendant's alcoholic psychosis was "a
  remote consequence superinduced by the antecedent exhaustion of the party
  arising from gross and habitual drunkenness"). (FN7)        

       ¶  26.  Although, with one exception, every state court to consider
  the issue has recognized the doctrine of settled insanity, many
  states-including Vermont-have simply not addressed it.  See Levine, supra,
  at 87-88 (noting that twenty-nine states have recognized settled insanity
  while twenty have not addressed it); cf. Bieber, 856 P.2d  at 817 (rejecting
  settled insanity as an unprincipled departure from the general rule
  precluding the insanity defense where defendant's psychotic state results
  from voluntary intoxication). (FN8)  Defendant tenders this as an
  appropriate case in which to recognize the doctrine, noting its general
  acceptance in other states, longevity under the common law, and recognition
  by the drafters of the Model Penal Code. (FN9)   
                                         
       ¶  27.  We are not persuaded, however, that this appeal presents a
  suitable factual setting for resolution of the issue. The many cases and
  articles that consistently require a showing that defendant's mental
  illness resulted from "long-term," "habitual," or  "chronic" drug or
  alcohol abuse do not, of course, establish any specific time frames
  relative to the offense, nor is it possible to do so.  Yet, by any measure,
  the circumstances here do not begin to approach the prolonged abuse leading
  to a fixed insanity that the common law recognized as sufficiently
  attenuated to excuse the crime.  Whatever its merits, the doctrine of
  settled insanity was developed to address mental illness resulting from
  long-term substance abuse over many years, gradually leading to organic
  brain damage, and its justification is based on the humane recognition
  "that at some point a person's earlier voluntary decisions become morally
  remote."  J. Dressler, supra, § 24.05[B], at 330.   

       ¶  28.  By his own admission, defendant's LSD use here began in July
  2000, lasted about two months, and ended two to three weeks before the
  offense in late September 2000.  He took the drugs precisely to experience
  the perceptual distortions that may result from such hallucinogens, and
  fully expected that the drugs would alter his state of mind. (FN10) 
  Although he continued to have bizarre thoughts weeks and months after the
  offense, he was found to have returned to mental competence to speak with
  the police and stand trial for his offenses within weeks, if not days,
  after the murder. (FN11) 
                                                                            
       ¶  29.  In these circumstances, the claim that defendant was operating
  under a "fixed or settled" insanity at the time of the offense is contrary
  to the very meaning of the doctrine and its altruistic origins.  To retain
  any moral or legal salience, the doctrine must-if it is ever justified-be
  limited to those cases where the initial choice to abuse alcohol or drugs
  has become so attenuated over time that it serves little or no purpose to
  hold the defendant accountable for that choice once a permanent mental
  illness has taken hold through years of chronic substance abuse.  To apply
  the doctrine here, to a crime committed while defendant was either directly
  under the influence or in the immediate aftermath of a discrete two-month
  period of using hallucinogenic drugs, would defeat the doctrine's meaning
  and underlying purposes.  See Allen v. State, 539 So. 2d 1124, 1126 (Ala.
  Crim. App. 1988) (although defendant had been treated for alcohol abuse on
  two occasions prior to offense, court held that defendant had "produced no
  evidence that his long-continued alcohol indulgence had resulted in a
  mental disease or defect"); State v. Valenzuela, 559 P.2d 201, 204 (Ariz.
  Ct. App. 1977) (upholding trial court's refusal to instruct on settled
  insanity where there was "no evidence to support a finding that the
  appellant was suffering from an existing state of mental illness caused by
  prolonged use of liquor"); People v. Free, 447 N.E.2d 218, 232 (Ill. 1983)
  (upholding court's refusal to instruct on settled insanity where there was
  "no evidence in the record that this defendant was a habitual or chronic
  user of drugs or alcohol, or that the claimed disease or defect was
  'settled' or 'fixed' ").  While there may indeed be cases that raise a
  genuine factual issue as to whether a defendant's prior, long-term drug or
  alcohol abuse has resulted in a fixed insanity, this is not such a case.
  (FN12) 
           
       ¶  30.     Our conclusion applies with equal force to the alternative
  settled-insanity theory advanced by the trial court in the proposed
  instruction at issue here.  As noted, Dr. Linder offered two possible
  diagnoses of defendant's psychosis at the time of the offense.  The first
  posited that it was a straight substance-induced psychosis, based on his
  testimony that LSD may continue to affect the user weeks after its last
  ingestion.  The second was that the LSD triggered a latent mental disease
  or defect, causing the psychotic episode. (FN13)  The latter diagnosis
  differs somewhat from the classic etiology of settled insanity because the
  theory is not that the illegal drugs caused the illness and resulting
  psychosis, but rather that they exacerbated or activated a preexisting
  latent illness. 

       ¶  31.      Accepting this theory as a plausible basis for the
  insanity defense, the trial court crafted an instruction that attempted to
  articulate its essential elements.  Borrowing from a Massachusetts
  decision, Commonwealth v. Herd, 604 N.E.2d 1294, 1298 (Mass. 1992), the
  proposed instruction provides that an insanity defense may be predicated
  upon a mental condition "caused by the voluntary consumption of illegal
  drugs if the drugs activate a latent mental disease or defect," provided
  that the defendant did not know or have reason to know the drug would
  activate the illness; that the resulting disease is recognized medically
  and existed at the time of the offense "independent of any temporary
  intoxication or high that the drugs caused;" and that the mental disease
  "lasted for a substantial time after the drugs had worn off."  The
  instruction went on to reject settled insanity in its traditional form,
  stating that "[a] mental disease or defect cannot be caused solely by the
  consumption of an illegal drug." 
   
       ¶  32.  Although the Herd case actually involved facts closer to a
  true settled-insanity claim (the evidence showed that the "mental disease
  or defect [was] caused solely by the consumption of a drug," id. at 1299),
  it relied on two earlier decisions, Commonwealth v. Shelley, 409 N.E.2d 732, 738-39 (Mass. 1980), and Commonwealth v. Brennan, 504 N.E.2d 612, 616
  (Mass. 1987), which held that a defendant may be entitled to show a lack of
  criminal responsibility where illegal drugs or alcohol activate a latent
  disease or defect, resulting in a psychotic episode.  Defendant has not
  shown, nor have we discovered, any significant movement by jurisdictions
  outside of Massachusetts to apply the Herd formula. 

       ¶  33.      The proposed instruction essentially posits that when the
  voluntary use of illegal drugs activates a "latent" mental illness
  resulting in psychosis, we should ignore the fact that illegal drugs were
  the precipitating cause.  This conclusion runs counter to the fundamental
  principle that a defendant is not excused from criminal liability for acts
  which result from a mental state that is self-induced through the voluntary
  ingestion of illegal drugs or alcohol.   If defendant here suffered, as Dr.
  Linder asserts, from a latent mental illness, it does not alter the fact
  that, as Dr. Linder also explained, defendant would not have been in a
  psychotic state at the time of the offense had he not chosen to use illegal
  consciousness-altering drugs. (FN14)  Thus, the very evidence on which
  defendant relies defeats his claim, for it demonstrates that his recent,
  voluntary use of illegal drugs was an essential causal element of the
  mental illness and psychotic episode that followed.  On these facts,
  defendant was not entitled to assert an insanity defense.  See, e.g.,
  Commonwealth v. Henry, 569 A.2d 929, 935 (Pa. 1990) (rejecting defendant's
  claim that the trial court erred in precluding an insanity defense based on
  his theory that he suffered from "an inherent pathologic illness triggered
  by the voluntary ingestion of alcohol"); Evilsizer v. State, 487 S.W.2d 113, 115 (Tex. Crim. App. 1972) (rejecting proposed instruction that would
  have allowed finding of insanity where "the accused is in any degree
  mentally impaired or infirm, and such impairment or infirm condition of his
  mind was stimulated or aggravated by the use of intoxicants to such an
  extent as to cause the accused to become temporarily insane").
                                         
       ¶  34.  Our conclusion is not altered by the instruction's additional
  requirement that defendant neither "knew nor had reason to know that the
  drug would activate the illness."  As we have seen, it is a fundamental
  tenet of our criminal code that a defendant must be held accountable  for
  the consequences of his or her actions resulting from the voluntary
  ingestion of illegal drugs or alcohol, and this rule remains unaffected by
  the possibility that the substance will activate an unknown condition
  leading to an unexpected reaction.  See, e.g., State v. Sette, 611 A.2d 1129, 1136 (N.J. Super. Ct. App. Div. 1992) (rejecting defendant's claim
  that he lacked criminal responsibility where his drug use interacted with
  the unknown presence in his system of agricultural pesticides, resulting in
  a psychotic reaction "wholly out of line with his reasonable
  expectations").  Indeed, many courts have held that a defendant can not
  reasonably assume the use of illegal drugs will have any predictable
  effect.  See, e.g., People v. Velez, 221 Cal. Rptr. 631, 638 (Cal. Ct. App.
  1985) (rejecting claim that defendant was not responsible for his actions
  after smoking marijuana cigarette unaware that it was laced with PCP since
  he could not "assume" that the marijuana would "produce any predictable
  intoxicating effect"); State v. Hall, 214 N.W.2d 205, 208 (Iowa 1974)
  (holding that defendant could not avail himself of involuntary intoxication
  defense where he claimed ignorance that the pill he took was LSD but
  otherwise "knew it was a mind-affecting drug"); Commonwealth v. Campbell,
  284 A.2d 798, 801 (Pa. 1971) (observing that the "nonpredictability" of
  hallucinogenic drugs such as LSD militates against recognizing a defense
  based on the psychotic state of mind which they induce). (FN15)    
   
       ¶  35.  In response to the third question, therefore, we hold that
  the proposed instruction did not set forth a correct of statement of the
  insanity defense under 13 V.S.A. § 4801.  We recognize that mental disease
  and the abuse of illegal drugs often coexist, and emphasize that nothing in
  our holding bars an insanity defense where the prior use of drugs is not an
  essential causal element of defendant's mental state.  Indeed, nothing that
  we have said would preclude this or any other defendant from attempting to
  prove at trial that the alleged insanity at the time of the offense was
  caused by a mental disease or defect that rendered them incapable of
  appreciating the criminality of their acts or of conforming their conduct
  to the requirements of law.  Upon such a showing, however, the State may
  offer evidence to prove that the voluntary ingestion of intoxicants was an
  essential causal element of the insanity so as to refute the claim that the
  insanity absolves the defendant of criminal responsibility.  See State v.
  Hanson, 529 A.2d 720, 724 (Conn. App. Ct. 1987) (where defendant has
  claimed affirmative defense of insanity, "[t]he state may offer evidence
  that intoxicating liquor was voluntarily ingested so as to cause the
  disease or defect, to refute the evidence that insanity absolves the
  defendant of criminal responsibility").    
   
       ¶  36.  Finally, we note that defendant has not asserted a
  constitutional right to an insanity defense based on the theory that we
  have rejected today, and we are reluctant to delve at length into a subject
  that was not raised below or briefed and argued on appeal.  As there is
  little point, however, to issuing a decision of doubtful constitutional
  validity, we pause long enough to note the following:  The United States
  Supreme Court has held that there is no due process right to assert a
  defense of voluntary intoxication so as to mitigate or excuse a charge of
  murder, Montana v. Egelhoff, 518 U.S. 37, 56 (1996) (Scalia, J., plurality
  opinion), and we are confident, in light of this holding, that the Court
  would not find a fundamental right to assert a complete defense based on
  the voluntary consumption of illegal drugs.   Indeed, the high court has
  traditionally reserved to the states the task of balancing the "constantly
  shifting . . . religious, moral, philosophical, and medical views" that
  underlie the insanity defense, Powell v. Texas, 392 U.S. 514, 536 (1968),
  and has expressly "not said that the Constitution requires the States to
  recognize the insanity defense."  Medina v. California, 505 U.S. 437, 449
  (1992).  Four state courts have thus upheld legislation virtually
  abolishing insanity as a defense and allowing evidence of mental disease or
  defect solely to rebut the mens rea element of the charge.  See State v.
  Searcy, 798 P.2d 914, 919 (Idaho 1990); State v. Bethel, 66 P.3d 840,
  851-52 (Kan. 2003); State v. Korell, 690 P.2d 992, 998-1000 (Mont. 1984);
  State v. Herrera, 895 P.2d 359, 366 (Utah 1995).  Therefore, while we need
  not consider the constitutional dimensions-if any-of our decision, we issue
  it secure in the understanding that it violates no fundamental rights of
  defendant. 

       ¶  37.  Our dissenting colleague rather strenuously asserts six
  purported deficiencies in today's decision.  We address them in order. 
  First, it is asserted that we improperly characterize the case as turning
  on "intoxication" rather than "accept the reality" that it involves
  insanity.  Post, ¶ 47.  On the contrary, the reality here is that defendant
  has asserted a defense premised on the proposition that his voluntary use
  of hallucinogenic drugs within weeks of the offense may entirely excuse his
  actions.  While defendant may not have been in the immediate throes of an
  hallucinogenic "high," the proximity and short-term nature of his drug use
  certainly bars any legitimate claim to a settled insanity defense.

       ¶  38.  Next, the dissent claims that the Court's decision fails to
  answer the actual question posed, and instead holds that "defendant should
  not be able to raise an insanity defense under any circumstances."  Post, 
  ¶ 49.  We do not believe that anyone reading today's decision will be left
  uncertain as to the Court's answer to the specific question certified for
  review.  As stated earlier, in response to that question, we hold that
  defendant may not assert an insanity defense premised on the voluntary use
  of illegal drugs that triggers a latent mental disease or defect.  
                                                                           
       ¶  39.  As to the dissent's charge that today's decision precludes
  defendant from raising an insanity defense "under any circumstances," even
  a cursory review of the opinion demonstrates otherwise.  The argument
  appears to be premised on dissatisfaction with the rule barring a claim of
  insanity if it would not have occurred "but for" the defendant's voluntary
  use of illegal drugs.  The dissent claims that this will unfairly prevent
  many mentally ill persons from presenting a legitimate insanity defense. 
  We discern no basis for such a claim, however, and the dissent offers none. 
  "But for" causation is a familiar legal standard that other jurisdictions
  have utilized in this context.  See, e.g., United States v. Henderson, 680 F.2d 659, 662 (9th Cir. 1982) (noting that insanity defense resulting from
  combination of mental defect and alcohol is unavailable where  "absent the
  alcohol [the] mental defect would not have rendered [the defendant]
  insane"); Hanson, 529 A.2d  at 723 (upholding trial court's rejection of
  insanity defense where evidence did not establish "that it was the
  defendant's mental condition, absent the ingestion of alcohol, which was
  the cause of his criminal behavior"); State v. Flagg, No. 9804019233, 1999
  WL 167775, at *2 (Del. Super. Ct. March 10, 1999) (interpreting state
  statute to hold that where alleged insanity "would not have occurred but
  for such [drug] consumption, . . .  defendant could not present an insanity
  defense"); see also Conn. Gen. Stat. § 53a-13(b) (2001) ("It shall not be a
  defense under this section if such mental disease or defect was proximately
  caused by the voluntary ingestion, inhalation or injection of intoxicating
  liquor or any drug or substance."); Del. Code Ann., tit. 11, § 401(c)
  (2001) ("It shall not be a defense . . . if the alleged insanity or mental
  illness was proximately caused by the voluntary ingestion, inhalation or
  injection of intoxicating liquor, any drug or other mentally debilitating
  substance."); Wash. Rev. Code § 10.77.030(3) (2002) ("no condition of mind
  proximately induced by the voluntary act of a person charged with a crime
  shall constitute insanity").  The "but for" standard most effectively
  advances the underlying principle that a person who would not have been
  insane at the time of the offense but for the use of illegal drugs should
  not be excused of responsibility for the crime.  As we have emphasized,
  however, nothing in our decision forecloses defendants from claiming or
  demonstrating that, apart from any incidental drug use, they suffered from
  a mental disease or defect that rendered them incapable of appreciating the
  criminality of their acts or conforming their conduct to the requirements
  of the law.
   
       ¶  40.  Next, the dissent claims that the Court has "ignored" the
  relevant standard of review and "selectively" found facts to support its
  decision.  Post, ¶ 51.  On the contrary, the material facts underlying
  today's decision are virtually undisputed, and consist entirely of the
  evidence advanced by defendant (not the State or this Court) in support of
  his claim.  Defendant claims, without dispute, that he consumed large
  quantities of LSD for about two months during the summer preceding the
  offense, and stopped about two to three weeks before the attack in
  September 2000.   Assuming these facts to be true, we hold plainly and
  simply that they are legally insufficient to support a claim of insanity. 
  See State v. Cram, 157 Vt. 466, 469, 600 A.2d 733, 734 (1991) (where the
  facts asserted by defendant, taken as true, are insufficient to sustain the
  purported defense, the trial court should deny use of the defense).

       ¶  41.  The dissent's recurring claim that the Court ignores or
  prejudges the record evidence is unfounded.  We are well aware of the
  record evidence of defendant's troubled family history, of the possibility
  that defendant suffered from some mental illness prior to the assault of
  the victim in this case, and of the potential that he may experience
  cyclical periods of mental illness in the future.   As we have stated,
  defendant is not barred from asserting an insanity defense on this basis. 
  He is barred, however, from claiming a mental illness triggered by the use
  of illegal drugs. (FN16)   
                          
       ¶  42.    Next, the dissent claims that our holding is unprecedented
  in its restrictions on the insanity defense, contrary to the common law,
  and constitutes an unwarranted intrusion on the prerogatives of the
  Legislature.  Nothing could be further from the truth.  Indeed, as we have
  seen, to recognize a settled insanity defense in this case would represent
  a distinct departure from the basic common-law doctrine requiring a fixed
  mental infirmity resulting from chronic substance abuse over the course of
  many years.  As for the variant set forth in the trial court's proposed
  instruction, which the dissent has aptly labeled the "Massachusetts
  defense," post, ¶ 87, we are aware of no widespread  endorsement of this
  approach.  With respect to the dissent's claim that our holding
  impermissibly amends the insanity statute, which contains no express
  exception for insanity caused by drugs or alcohol, we would point out that
  the argument is fundamentally self-defeating; it acknowledges that in the
  absence of an express statutory provision, the common law controls.  See
  State v. Francis, 151 Vt. 296, 305, 561 A.2d 392, 397 (1989) ("[T]he common
  law controls unless modified by statute or case law.") (quotations
  omitted).  As we have seen, it is well settled that, absent a fixed
  insanity developed over a prolonged period of abuse, the voluntary use of
  drugs or alcohol that triggers a psychotic reaction will not absolve a
  defendant of criminal responsibility.  Our holding, therefore, is
  consistent with controlling common law, and does no violence to the
  separation of powers doctrine or the prerogatives of the Legislature. 
   
       ¶  43.  Finally, the dissent claims that the "moral blameworthiness"
  rationale for barring an insanity defense based upon the recent, voluntary
  use of illegal drugs is "suspect" here because the taking of drugs may not
  have been "entirely voluntary."  Post, ¶¶ 66-67.   In fact, however,
  defendant did not claim below, and does not argue here, that his
  consumption of illegal psychoactive drugs was involuntary.  Rather,
  defendant has consistently maintained that the insanity defense should be
  available notwithstanding his voluntary use of illegal drugs if the drugs
  resulted in a settled insanity or interacted with a preexisting mental
  condition to cause insanity.   Defendant's implicit concession is
  consistent with Dr. Linder's report, based on interviews with defendant and
  others, which indicates that defendant had been consciously experimenting
  with the mind-altering effects of illegal drugs out of "intellectual
  curiosity."  Accordingly, the dissent's argument is simply irrelevant to
  this case.  Furthermore, although the dissent cites articles suggesting a
  causal connection between mental illness and compulsive drug or alcohol
  use, most courts have rejected the proposition that mental illness that
  predisposes a defendant to drug or alcohol abuse may justify a finding of
  involuntary intoxication.  See, e.g., Evans, 645 P.2d  at 159-60 (rejecting
  claim that an internal compulsion to drink may support involuntary
  intoxication or insanity defense); See v. State, 757 S.W.2d 947, 950 (Ark.
  1988) (noting that "most jurisdictions have held that an irresistible
  compulsion to consume intoxicants caused by a physiological or
  psychological disability does not render the ensuing intoxication
  involuntary"); State v. Palacio, 559 P.2d 804, 806 (Kan. 1977) (rejecting
  claim that compulsion to drink rendered defendant's intoxication
  involuntary); State v. Bishop, 632 S.W.2d 255, 259-60 (Mo. 1982) (rejecting
  argument that drugged condition of defendant was involuntarily produced
  where it was caused by defendant's addiction); see generally Dressler,
  supra, § 24.02[A][2], at 321-22. 

                                    III.

       ¶  44.  The fundamental principle underlying the insanity defense is
  that one should not be punished for criminal acts for which one is not
  responsible.  Consistent with this principle, it is universally recognized
  that a defendant who intentionally consumes drugs or alcohol resulting in a
  psychotic state will not be relieved of responsibility for his or her
  criminal acts.  The question presented by this case is whether we are
  willing to relieve a defendant of criminal responsibility whose psychosis
  allegedly emerged from a mental illness triggered by the defendant's
  voluntary use of illegal hallucinogenic drugs for a period of two months
  preceding the crime.  As explained above, we conclude that the law may
  reduce an individual's culpability in such circumstances, but will not
  excuse it.  Like any other individual asserting an insanity defense,
  however, defendant remains free to prove that he was not responsible for
  his conduct as the result of an independently preexisting mental disease or
  defect that rendered him unable to appreciate the criminality of his acts
  or to conform his conduct to the requirements of law.                

       The trial court order denying the State's motion to preclude evidence
  at trial regarding defendant's diminished capacity due to voluntary use of
  illegal drugs is affirmed.  The trial court order allowing defendant to
  present an insanity defense based on the voluntary consumption of illegal
  drugs that activate a latent mental disease or defect is reversed.  The
  case is remanded for further proceedings consistent with the views
  expressed herein. 



                                       FOR THE COURT:


                                       _______________________________________
                                       Chief Justice



------------------------------------------------------------------------------
                                 Dissenting

        
       ¶  45.  DOOLEY, J., dissenting.  Although I concur with Part I of the
  majority opinion and join it, I respectfully dissent from Part II.  There,
  the majority holds that a statutory insanity defense is not available to a
  defendant who is insane at the time of the charged offense as the result of
  a latent mental illness activated by the defendant's prior ingestion of
  illegal drugs-even if the defendant's mental condition prevented him from
  conforming his conduct to the requirements of the law, and even if he did
  not know, and could not have known, that his drug use would trigger the
  underlying mental illness.  In my view, the holding is inconsistent with
  our insanity defense statute, the Model Penal Code from which our statute
  is derived, and the established common law.  Further, the majority's
  holding fails to answer the certified question before us and is based on
  appellate fact-finding with no recognition of the limited standard of
  review applicable here.

       ¶  46.  I recognize that this is a complex and confusing case, in part
  because of the complicated expert testimony and in part because of the way
  the majority has chosen to analyze the case.  My goal in this dissent is to
  provide clarity where it does not exist in the majority opinion.  I attempt
  to do so by expressing up front my six main differences with the majority
  opinion in general terms in Part I.  Then I will review the facts in detail
  and discuss how I would decide this case, interrelating why I believe the
  majority's analysis is wrong. 

                                     I.

                  A.  This Case is Not About Intoxication.
   
       ¶  47.  This is a recurring theme in my dissent because it is a
  recurring theme in the majority opinion and the authority on which it
  relies.  Apparently, the majority has succumbed to the State's refrain that
  defendant is trying to make an insanity defense out of being high on drugs. 
  I emphasize that everyone in this case, including the defendant, agrees
  that the mental state of intoxication alone cannot be a complete defense to
  a criminal charge.  By intoxication, I mean the mind alteration or "high"
  that directly follows the ingestion of an intoxicant.  At best,
  intoxication can demonstrate diminished capacity, as Part I of the majority
  opinion holds.  The trial court acknowledged as much and more, stating in
  its proposed summary of Vermont law that the mental disease "must exist at
  the time of the offense, independent of any temporary intoxication or high
  that the drugs caused."  But faced with expert opinion that defendant's
  conduct resulted from a preexisting mental illness activated by long-term
  drug use, the court decided that the causative presence of both the
  preexisting mental illness and the drug-induced psychotic condition,
  independent of any intoxication, could be found by the jury to be insanity
  under our statute.  Our opinion should accept the reality of the trial
  court's decision and its support in the evidence, rather than characterize
  this as an intoxication case. (FN17) 


            B.  The Majority Opinion Answers the Wrong Question.


       ¶  48.  As noted in ¶ 9 of the majority opinion, the trial court asked
  this Court in its third certified question if the following is a correct
  statement of the law as it relates to the term "mental disease or defect"
  contained in 13 V.S.A. § 4801:

      The term "mental disease or defect" as used in 13 V.S.A. § 4801
    includes a mental condition caused by the voluntary consumption of
    illegal drugs if the drugs activate a latent mental disease or
    defect, and as a result of that mental disease or defect the
    individual has lost capacity to appreciate the criminality of his
    conduct, or has lost the capacity to conform his conduct to the
    requirements of the law, unless the individual knew or had reason
    to know that the drug would activate the illness.  The resulting
    disease or defect must be recognized medically and must exist at
    the time of the offense, independent of any temporary intoxication
    or high that the drugs caused.  It does not matter that the mental
    disease or defect was not permanent, if the condition lasted for a
    substantial time after the intoxicating effects of the illegal
    drugs had worn off.  A mental disease or defect cannot be caused
    solely by the consumption of an illegal drug.

        
       ¶  49.  Instead of directly addressing this question, the majority
  leads off Part II of its opinion by saying "[t]he final certified question
  asks us to determine whether defendant can present an insanity defense . .
  . ."  Ante, ¶ 18.  In the end, the majority never fully answers the
  question posed but instead delves into the facts to show that defendant
  should not be able to raise an insanity defense under any circumstances. 
  According to the majority, "the claim that defendant was operating under a
  'fixed or settled' insanity at the time of the offense is contrary to the
  very meaning of the doctrine and its altruistic origins," and applying "the
  doctrine here, to a crime committed while defendant was either directly
  under the influence or in the immediate aftermath of a discrete two-month
  period of using hallucinogenic drugs would defeat its meaning and
  underlying purpose."  Ante, ¶ 29.

       ¶  50.  I recognize that we have "on occasion, deviated from the
  general rule and decided issues on interlocutory appeal where the trial
  court had not properly certified the question but where the question is
  capable of resolution and has been fully briefed and argued."  White
  Current Corp. v. Vt. Elec. Coop., 158 Vt. 216, 222, 609 A.2d 222, 225
  (1992).  But there is nothing improper about the certified question here. 
  Except for making modifications to accurately state its legal position, the
  trial court simply posed the question proposed by the prosecution. 
  Nevertheless, the majority ventures into issues that the parties,
  particularly defendant, have not even briefed.  Further, the majority does
  so without even acknowledging that it has deviated from the certified
  question.

       C.  The Majority Has Ignored the Standard of Review and Selectively
  Found Facts to Support Its Conclusion.

       ¶  51.  The question in this case is not whether defendant will be
  found insane--indeed, insanity defenses are notoriously difficult to
  sustain-but whether the jury will even be allowed to consider an insanity
  defense.  Nowhere in the majority opinion is there an acknowledgment that
  the standard of review with respect to this question, and particularly with
  respect to facts surrounding this question, is very limited.  The issue is
  whether defendant made a sufficient offer of proof to reach the jury on
  whether he was insane at the time of the offense, and the standard we must
  apply is whether "taking the facts in defendant's offer as true, no
  reasonable juror could find that the requirements of the [insanity] . . .
  defense were satisfied."  State v. Cram, 157 Vt. 466, 469, 600 A.2d 733,
  734 (1991) (applying necessity defense); see also State v. Bush, 595 S.E.2d 715, 722 (N.C. Ct. App. 2004) (holding that "[i]n determining whether the
  evidence supports an instruction on any affirmative defense, the evidence
  should be viewed in the light most favorable to the defendant").
   
       ¶  52.  The problem is not the majority's failure to recognize that
  it is bound by this limiting standard, but rather that it never applies the
  standard at all.  For the most part, the majority opinion is based on its
  own fact-finding.  In some places it relies upon the prosecution's evidence
  for its facts, ignoring the detailed offer of proof from defendant upon
  which the trial court ruled and from which we are required to draw the
  relevant facts.  Thus, the majority portrays a defendant who did drugs for
  a very short period of time, went crazy, killed someone, and then returned
  to a normal state shortly after the killing.

       ¶  53.  The majority ignores the ample evidence that is inconsistent
  with its characterization of the facts.  Representative of the majority's
  approach is the language I quoted above:  "defendant was either directly
  under the influence or in the immediate aftermath of a discrete two-month
  period of using hallucinogenic drugs."  Ante, ¶ 29.  And in response to
  this dissent, the majority says, "[w]hile defendant may not have been in
  the immediate throes of an hallucinogenic 'high,' the proximity and
  short-term nature of his drug use certainly bars any legitimate claim to a
  settled insanity defense."  Ante, ¶ 37.

       ¶  54.  Compare the majority's description of the evidence to the
  description of defendant's mental condition contained in Dr. Linder's
  report in defendant's offer of proof:

      Mr. Sexton was experiencing significant dysfunction in his life
    characterized in part by the loss of a girlfriend relationship,
    being confronted at gunpoint, nuclear family dysfunction, curfew
    mandated isolation, unemployment, legal difficulties and substance
    use.  It was under the cumulative strain of these circumstances
    that he decompensated into a florid psychotic condition.  His
    substance use contributed to this destabilization.  He had been
    using cannabis, LSD, some cocaine, some psilocybin mushrooms, some
    Ketamine, some ecstacy and some nitrous oxide.

  Under the majority's analysis of the offer of proof, the only relevant word
  in the above paragraph is LSD; it is as if the remainder of the words were
  not there.
   
       ¶  55.  Up until the opinion in this case, there has been only one
  independent judicial analysis of defendant's condition, done by Judge Toor
  to determine whether a hospitalization hearing was required for defendant. 
  In reaching her decision, she found: (1) defendant's mental condition had
  been developing for many years; (2) a mental illness such as defendant's is
  usually a lifelong condition that often requires cyclical hospitalization;
  (3) defendant is likely to have more overt psychotic conditions at
  different times in his life; and (4) his condition will wax and wane over
  time.  It is difficult te reconcile Judge Toor's analysis of defendant's
  condition with that of the majority. 

       ¶  56.     The majority's language in describing defendant's condition
  and his defense was not chosen to put defendant's circumstances in the best
  light from his perspective.  Indeed, the description is exactly the
  prosecution's characterization of the evidence when viewed in the light
  most favorable to the State.

       D.  The Majority Has Rejected as Too Liberal a Proposed Instruction
  that Would Restrict the Availability of an Insanity Defense in Drug Cases
  to a Greater Extent Than Any Jurisdiction in the United States, Except for
  a Few States that Have Enacted a Specific Restrictive Statute.

       ¶  57.  As discussed in detail below, there are two recognized
  instances where a defendant who has taken drugs can nevertheless be insane
  at the time of the criminal act.  The first is when the defendant suffers
  from "fixed" or "settled" insanity as a result of drug usage.  The second
  is when the defendant has a preexisting mental illness and the drug usage
  activates that mental illness under circumstances where the defendant is
  unaware that the activation would occur.  Uniquely, the trial court
  required that both instances be present in the same case, a requirement
  imposed by no other court in the United States.  Thus, this defendant was
  required under the trial court's instruction to prove both that he suffered
  from fixed or settled insanity as a result of drug use and that he had a
  preexisting separate mental illness that was activated unforeseeably by the
  drugs.  I doubt that more than a small percentage of defendants who had
  ever taken drugs could fit themselves within the very narrow confines of
  the insanity defense allowed by the trial court.  Indeed, defendant may be
  in a small class of one in his ability to provide evidence on all the
  elements.
   
       ¶  58.  One would think from the rhetoric of the majority opinion,
  some of which I quoted above, that the trial court had adopted a very
  liberal standard out of touch with the vast majority of decisions around
  the country.  It is hard to imagine a characterization further from the
  truth.  The concerns that caused the trial court to create its restrictive
  standard were much the same as those professed by the majority today, even
  if its method of addressing them was different.  Nowhere is this reflected
  in the majority opinion.

       ¶  59.  I return to the point made above that the majority has failed
  to fully address the certified question.  The trial judge believed that a
  combination of an underlying mental illness, conditions that created fixed
  and settled insanity, and an unawareness of the effect of the drugs was
  sufficient to get to the jury with an insanity defense.  He apparently
  agreed with the majority on the weakness of each of the elements of the
  defense in isolation-for example, he rejected the doctrine of fixed and
  settled insanity-but believed that a carefully-constructed combination of
  the elements met all the concerns.  The majority has not addressed why his
  analysis is wrong, instead considering the elements separate from each
  other.  Moreover, it has not addressed why his instruction on the element
  taken from fixed and settled insanity is wrong, instead choosing to evade
  the question and hold without briefing that defendant could not meet any
  test of fixed and settled insanity.

       ¶  60.      The majority's holding is that if defendant's drug use was
  one of the factors leading to the charged offense, he cannot present an
  insanity defense to the jury even if he can demonstrate overwhelmingly that
  the criminal conduct was caused by an independent mental illness.  No court
  has adopted such a restrictive standard, except when construing statutes
  that explicitly foreclosed an insanity defense where drugs were a causal
  factor.  In essence, the majority has reduced to zero the very few possible
  defenses allowed by the trial court's restrictive legal standard.

       ¶  61.  I recognize that this is a strong statement, but I believe
  that it is fully supported by the record in this case.  Defendant's expert
  witness gave his opinion that defendant's behavior was caused either by
  "Schizophreniform Disorder or Substance Induced Psychotic Disorder," either
  of which is "a severe psychotic condition . . . capable of qualifying as a
  mental disease."  The reality is that while he can identify mental illness
  when he sees it, the expert cannot exclude every possible cause.  The
  burden placed on defendant by the majority is virtually impossible to
  satisfy because in the complex area of human behavior, defendant cannot
  prove a negative.
   
       ¶  62.  I also stand by my statement about the law in the rest of the
  country, notwithstanding the  majority's citation to a number of cases in
  support of its position.  Even a cursory reading of the cases cited by the
  majority shows that they involved (1) statutes explicitly foreclosing an
  insanity defense when drug use is a causal factor and/or (2) offenses
  committed while the defendants were under the immediate influence of
  intoxicating drugs or alcohol-precisely what the trial court's instruction
  excluded from consideration in this case.  I particularly take issue with
  the majority's summary of the law: "As we have seen, it is well settled
  that, absent a fixed insanity developed over a prolonged period of abuse,
  the voluntary use of drugs or alcohol that triggers a psychotic reaction
  will not absolve a defendant of criminal responsibility."  Ante,  ¶ 42. 
  This is not an accurate statement of the common law in situations where the
  defendant suffered from an underlying mental illness that was a proximate
  cause of his criminal conduct and he was not under the direct influence of
  intoxicating drugs at the time of the offense.  Nor is it an accurate
  description of the fixed or settled insanity doctrine as it has evolved in
  the common law.  And even if it were an accurate statement of the law,
  defendant's offer of proof is sufficient to get to the jury under that
  standard.

       ¶  63.  Although the majority contends that it is just relying on
  "basic common-law doctrine," ante, ¶ 42, it refuses to recognize fixed or
  settled insanity in any context.  Every court that has considered the
  question, except for one that relied upon a specific statute distinct from
  ours, has adopted the doctrine of fixed or settled insanity as part of the
  common law.  Yet, the majority strongly indicates that it will never accept
  fixed or settled insanity, putting it odds with every other state in the
  country without a specific statute on the question.

       E.  The Majority Has Ignored Vermont's Insanity Statute While Imposing
  on Vermont the Statutes of Other States.
   
       ¶  64.  Apart from citing it, the majority barely mentions Vermont's
  insanity defense statute.  Yet, this is fundamentally a statutory
  construction case because the Legislature has taken control of the policy
  regarding when to allow an insanity defense.  A proper analysis of this
  case under the statute the Legislature has enacted reaches a very different
  conclusion than that reached by the majority, as discussed in detail below. 
  The majority obviously disagrees, imposing the policy it wants rather than
  the policy the Legislature enacted.  To support its point of view, the
  majority relies on precedents from states with special statutes governing
  the interrelationship between drug abuse and insanity.  In effect, the
  majority imposes these special statutes on Vermont, thereby disregarding
  the policy choices of the Vermont Legislature in favor of those made by the
  legislatures of Delaware, Washington, and Connecticut.

       ¶  65.  In my view, the majority's decision goes beyond the proper
  role of this Court.  This case concerns an area of the law that entails
  "significant and far-reaching policy concerns more properly left to the
  Legislature, where hearings may be held, data collected, and competing
  interests heard before a wise decision is reached."  Smith v. Parrott, 2003
  VT 64, ¶14, 175 Vt. 375, 833 A.2d 843 (quotations omitted) (holding that
  where statute incorporated common law elements of medical malpractice,
  decision to follow other states in adopting "loss of chance" doctrine of
  causation involves conflicting policy considerations best left to
  Legislature); accord Titchenal v. Dexter, 166 Vt. 373, 385, 693 A.2d 682,
  689 (1997) (stating that "complex social and practical ramifications" of
  recognizing nonparents' right to seek custody or visitation renders
  Legislature "better equipped to deal with the problem").  As one leading
  commentator has stated, the legal standard for presenting an insanity
  defense

    must reflect underlying principles of criminal responsibility,
    comport with the current scientific understanding of mental
    disease, permit mental health experts reasonable opportunity to
    provide their insights to the court, and yet also preserve to the
    trier of fact the ultimate and full authority to render a verdict
    on criminal responsibility.

  J. Dressler, Understanding Criminal Law § 25.01, at 336 (3d ed. 2001). 
  Crafting such a standard is a job for the Legislature, not this Court. 

       F.  The Majority's Underlying Philosophy of Moral Blameworthiness is
  Suspect in These Circumstances.
   
       ¶  66.  We are dealing here with the special circumstance of a
  defendant who, if the court-appointed expert's testimony is accepted, was
  mentally ill at the time of the offense and whose mental illness caused the
  criminal conduct.  Yet, the majority's holding prevents this mentally ill
  defendant from even presenting an insanity defense to the jury.

       ¶  67.  The majority justifies this anomaly by proclaiming that
  defendant is morally blameworthy for taking drugs. (FN18)  That rationale
  might be understandable if the taking of drugs was entirely voluntary and
  not affected by defendant's underlying mental illness.  Although no expert
  addressed this question because it was not relevant to the legal standard,
  and the majority has now foreclosed that inquiry by its ruling, it is
  unlikely to be true.  The literature is clear that there is a relationship
  between mental illness and drug abuse.  The research indicates "that one's
  inherent propensity to use drugs or alcohol can be triggered by mental
  illness," including personality disorders or organic brain disorders such
  as schizophrenia.  M. Sbaiti, Administrative Oversight?  Towards a
  Meaningful "Materiality" Determination Process for Dual-Diagnosis Claimants
  Seeking Disability Benefits under Titles II & XVI of the Social Security
  Act, 35 Colum. Hum. Rts. L. Rev. 415, 432 (2004); see also R. Honberg, The
  Injustice of Imposing Death Sentences on People with Severe Mental
  Illnesses, 54 Cath. U. L. Rev. 1153, 1161 (2005) (noting high rates of
  "comorbidity-co-occurring mental illness and substance use or abuse"); E.
  Boison, Mental Health Parity for Children and Adolescents: How Private
  Insurance Discrimination and ERISA Have Kept American Youth from Getting
  the Treatment They Need, 13 Am. U. J. Gender Soc. Pol'y & L. 187, 208 n.154
  (2005) (accord).
                            
       ¶  68.  In view of these research findings, I cannot subscribe to the
  majority's view that every mentally ill defendant who takes drugs is
  morally blameworthy for any criminal conduct that occurs. (FN19)  I agree
  with the Supreme Judicial Court of Massachusetts that the moral fault for
  using illegal drugs is not equivalent to the moral fault for committing the
  charged offense, particularly when that offense is murder.  See
  Commonwealth v. Herd, 604 N.E.2d 1294, 1299 (Mass. 1992) ("We are
  unwilling, in order to justify a homicide conviction, to permit the moral
  fault inherent in the unlawful consumption of drugs to substitute for the
  moral fault that is absent in one who lacks criminal responsibility.").  By
  denying defendant an opportunity to present an insanity defense because of
  his prior drug use, the majority undermines one of the most basic precepts
  of our criminal law, as stated by Justice Frankfurter over fifty years ago:

    Ever since our ancestral common law emerged out of the darkness of
    its early barbaric days, it has been a postulate of Western
    civilization that the taking of life by the hand of an insane
    person is not murder.

  United States ex rel. Smith v. Baldi, 344 U.S. 561, 570 (1953)
  (Frankfurter, J., dissenting).

                                     II.

       ¶  69.  The majority's selective presentation of certain facts
  requires that I provide a fuller rendition of the circumstances surrounding
  the charged offense in order to address the question certified by the trial
  court.  Defendant was eighteen years old when he committed the offense. 
  His father had a history of recurrent depression, alcohol and substance
  abuse, suicide attempts, and a personality disorder requiring years of
  mental health treatment.  Defendant's mother also suffered from depression. 
  Other extended family members had had "nervous breakdowns" or had attempted
  suicide.  Early on, defendant was diagnosed with emotional and behavioral
  disabilities that affected his school work.  The diagnoses included
  adjustment disorder with mixed emotional features, mixed
  receptive-expressive language disorder, appositional defiant disorder, and
  acute stress disorder.
   
       ¶  70.  By the seventh grade, defendant was exhibiting serious
  behavioral problems and was smoking marijuana.  On separate occasions in
  1995, he threatened each of his parents with a knife.  Crisis services were
  called, and defendant was briefly hospitalized, after which he continued
  for some period of time in outpatient psychotherapy.  In 1998, he
  threatened to kill his father after he was grounded for using the family
  car.  Based on that incident, he was charged with domestic assault and
  placed on probation.

       ¶  71.  In the spring of 1999, after another confrontation with his
  father that resulted in his slitting his own wrist, defendant stopped
  attending school regularly, left home, and began working full time.  His
  drug use escalated after he lost his job in January 2000.  In addition to
  regular marijuana use, he experimented with other psychoactive drugs such
  as ecstacy, hallucinogenic mushrooms, and cocaine.  In July 2000, he began
  using LSD.  Although he claims to have taken up to 300 "hits" in the
  ensuing two or three months, at least one of the examining psychiatrists
  opined that such numbers were unlikely because that amount would have
  prevented defendant from being able to function at any level.  Defendant
  was arrested twice in August 2000, the month before the killing.  The first
  incident occurred when he engaged police in a physical confrontation after
  they tried to remove him from a private residence.  The second incident
  occurred a week later when he tried to intervene with police officers who
  were confronting his friends because of their use of his skateboards.  He
  was charged with impeding an officer, disorderly conduct, and resisting
  arrest.
   
       ¶  72.  By all accounts, defendant last took LSD two to three weeks
  before the killing.  He continued to smoke marijuana on a daily basis until
  three or four days before, and possibly again on the day of, the killing,
  but apparently took few, if any, other drugs during that period. 
  Nevertheless, he began to experience more pronounced feelings of paranoia
  in the days leading up to the killing.  Witnesses described him as
  constantly discussing conspiracy theories and feeling that everyone was
  against him.  He believed that his friends were trying to pull something
  out of him and that there was "a society within a society" that did not
  include him.  He felt like everyone was "in his face" and wanted to kill
  him because they knew what he was thinking, particularly how miserable they
  all were.  He considered them all to be "robots" who could not control
  themselves.

       ¶  73.  He ate very little, had difficulty sleeping, and stopped going
  outside.  He believed that he saw blood coming from his cat and that the
  cat was in pain and asking him to end its misery.  On the evening of the
  killing, he strangled and stomped the cat to death after he thought he
  heard it say it was suffering.  He imagined that, to be reborn, he had to
  collect souls and become a new deity.  Not wanting to look at the mangled
  cat, he decided to start collecting souls immediately.  He headed upstairs
  to gather the souls of (i.e., kill) his neighbors, but they were not home,
  so he went outside and saw the unfortunate victim riding her bike down the
  street.  Although he had never met or seen the woman before, he attacked
  her without provocation and beat her to death.

       ¶  74.  The toxicology report done the day after the killing showed
  residual marijuana metabolites in defendant's blood but no other legal or
  illegal drugs in his system, except those attributed to medications he had
  been given at the hospital following his arrest.  A court-appointed
  psychiatrist, Dr. Linder, met with defendant on five occasions at the
  Vermont State Hospital between September 29, 2000 and November 16, 2000,
  after which he filed a report concluding that defendant was insane at the
  time of the killing but competent to stand trial.  Dr. Linder noted that
  defendant exhibited an abundance of severe psychiatric symptoms strongly
  suggesting that he had a major mental illness-either schizophrenia,
  schizophreniform disorder, or schizoaffective disorder-at the time of the
  killing.  Dr. Linder also found limited evidence to suggest an alternative
  diagnosis-substance-induced psychosis with hallucinations and
  delusions-which he opined could be considered a mental disease "due to the
  incipient and unanticipated development of the condition while using
  significant substances for the first time."  Dr. Linder concluded that
  defendant had been latently psychotic for years and that recent
  circumstances-including drug use-had set in motion a complete psychotic
  breakdown.
   
       ¶  75.  While acknowledging that drug use probably played a
  significant role in activating defendant's mental illness, Dr. Linder did
  not consider defendant's substance abuse to be the primary factor in his
  psychosis because of the long period of disordered thinking before
  defendant began his relatively brief period of using psychoactive drugs. 
  Dr. Linder also opined that defendant could not have known or predicted the
  magnitude of his psychotic reaction to the drugs he took.  Dr. Linder
  concluded that, by the time of the alleged offense, defendant had reached
  such a delusional and psychotic state of mind that he could not reflect
  rationally enough to refrain from killing either his beloved cat or a total
  stranger.

       ¶  76.  Based on Dr. Linder's report, the parties stipulated to
  defendant's competency to stand trial.  Dr. Linder and Dr. Bertold Francke,
  defendant's treating psychiatrist at the state mental hospital, testified
  at a hospitalization hearing in the spring of 2001.  Following the two-day
  hearing, the district court determined that defendant was still in need of
  mental health treatment and required continued hospitalization, finding,
  based on expert testimony, that (1) defendant's mental condition had been
  developing for many years; (2) a mental illness such as defendant's is
  usually a lifelong condition that often requires cyclical hospitalization;
  (3) defendant is likely to have more overt psychotic conditions at
  different times in his life; and (4) his condition will wax and wane over
  time.  The court explicitly rejected the State's attempt to isolate
  defendant's past behavior from his then-current mental state, noting that
  his improved behavior did not demonstrate that he was no longer mentally
  ill.
   
       ¶  77.  Following notification of defendant's intent to rely upon an
  insanity defense, the State obtained permission for Dr. Albert Drukteinis
  to perform an independent psychiatric evaluation of defendant.  In April
  2002, Dr. Drukteinis filed a report in which he stated that defendant was
  suffering from psychotic thought at the time of the killing and thus was
  not able to appreciate the criminality of his conduct.  Dr. Drukteinis
  concluded, however, that defendant had no prior history of a major thought
  disorder such as schizophrenia and that, in his opinion, defendant's
  psychotic state arose in the context of heavy drug abuse.  According to Dr.
  Drukteinis, defendant had acted recklessly by accepting "the loss of
  contact with reality that the drugs routinely brought which was not
  altogether different than the psychotic state which they precipitated." 
  Hence, Dr. Drukteinis opined that defendant's voluntary drug use directly
  resulted in his psychotic state and the ensuing killing.

       ¶  78.  In June 2002, the district court transferred custody of
  defendant to the Department of Corrections after concluding that his
  continued hospitalization was no longer justified.  The court based its
  decision on the testimony of the only witness-defendant's new treating
  psychiatrist at the state hospital, Dr. Margaret Bolton-who stated that
  defendant's psychosis had dissipated and that he had not been prescribed
  any anti-psychotic drugs since June 2001.  Dr. Bolton opined that defendant
  did not suffer from either schizophrenia or borderline personality
  disorder.

       ¶  79.  In an ensuing deposition and follow-up letter, Dr. Linder
  concluded that defendant had been suffering from either schizophreniform
  disorder-a condition resembling schizophrenia, but with symptoms lasting
  only between one and six months-or a substance-induced psychotic disorder
  at the time of the alleged offense.  Dr. Linder stated that defendant's
  genetic vulnerability and his long history of mental and emotional
  dysfunction predisposed him to develop a severe psychotic reaction to some
  of the psychoactive drugs he took in the months preceding the murder. 
  According to Dr. Linder, however, defendant's sustained psychotic
  state-lasting several weeks after he stopped using the drugs-indicated that
  the psychosis he experienced was not purely drug-induced.  Rather, Dr.
  Linder surmised that defendant's predisposition towards mental illness,
  activated by some combination of social, occupational, interpersonal, and
  substance-use stressors, caused defendant to be insane at the time of the
  offense.
   
       ¶  80.  Dr. Linder also emphasized that the psychotic state defendant
  experienced was well beyond the ken of altered states of consciousness
  anticipated or desired by drug users.  Dr. Linder recognized that, in using
  the drugs, defendant anticipated that they might produce odd and unusual
  mental experiences but concluded that defendant could not have known the
  potential for the magnitude of the reaction that occurred.  According to
  Dr. Linder, although defendant "may have been aware . . . that to consume
  LSD might lead to short-term mental phenomena with perceptual and thinking
  distortions, he had no more capacity to predict the dramatic acute florid
  psychotic reaction than a nondrinker would be able to know that their first
  alcoholic drink would lead to a state of pathological intoxication with
  resultant psychosis and aggression."

       ¶  81.  Thus, Dr. Linder opined that defendant's psychosis on the day
  of the killing was not a "psychedelic experience" from LSD, but rather was
  a response "seen rarely . . . in individuals vulnerable and genetically
  predisposed where the toxic effects of LSD interact with a premorbid
  vulnerability to produce a sustained psychotic reaction."  (Quotations
  omitted.)  Dr. Linder surmised that:

    Without the predisposing elements of his susceptibility, the drug
    use alone would have probably not led to the resulting psychotic
    condition.  Without the drug use, in an individual susceptible to
    decompensation as was Mr. Sexton, the deterioration probably would
    not have occurred within the same time frame and it may have been
    avoided altogether due to other interceding circumstances.

       ¶  82.  Defendant also presented an expert opinion from Dr. Scott
  Lukas, a clinical professor of psychiatry at Harvard Medical School,
  describing research suggesting that persons with a genetic predisposition
  to schizophrenia or "premorbid" schizophrenia (i.e., not yet clinically
  apparent) are more susceptible to a psychotic response to LSD use.  Dr.
  Lukas concluded that "drug use can exacerbate an underlying and
  subthreshold psychiatric disorder" leading to psychosis, that defendant's
  "mental health history clearly puts him in this category," that his
  condition was not solely attributable to LSD use, and that defendant "was
  not likely aware of the impact that LSD use would have on him, particularly
  because he had been using it for such a relatively brief period of time." 
  In Dr. Lukas's view, defendant's psychiatric condition was chronic, even if
  intermittent, and was not dependent on the use of LSD or any other illicit
  drug.
   
       ¶  83.  In light of the medical evidence presented as of June 24,
  2003, the trial court asked defendant to "submit a concise statement of his
  theory as to the applicability of the insanity defense."  In response,
  defendant submitted a letter from Dr. Linder, who opined that defendant had
  a mental disease at the time of the killing that could be diagnosed as
  either schizophreniform disorder or a substance-induced psychotic disorder. 
  The letter stressed that even though defendant had ceased most drug use two
  to three weeks before the killing, the psychotic state triggered by the
  drug use had persisted well beyond the period of intoxication.  According
  to the expert, defendant could not have predicted that the drugs would
  activate his underlying mental illness, thereby triggering the psychotic
  reaction.

       ¶  84.  Based on this proffer and other evidence, the trial court
  determined that defendant had presented sufficient evidence in support of
  his insanity defense theory to reach the jury but posed the question of
  whether a substance-induced psychotic disorder should be recognized as a
  mental disease under our insanity-defense statute.  The court concluded
  that generally it should not unless the defendant was not under the
  immediate influence of drugs at the time of the alleged offense and could
  not have known that his prior drug consumption would cause insanity by
  activating a medically recognized latent mental disease.

       ¶  85.  Accordingly, the court proposed an instruction allowing the
  jury to accept an insanity defense if (1) defendant's drug consumption
  activated a medically recognized mental disease that caused him to be
  insane at the time of the alleged offense; (2) defendant did not know and
  had no reason to know that his drug consumption would activate the mental
  disease; (3) the mental disease existed independently of any temporary
  intoxication or high caused by drugs; and (4) the mental disease lasted for
  a substantial period of time after the intoxicating effects of the drugs
  had worn off.  The proposed charge also would inform the jury that the
  defense could not apply if the mental disease was caused solely by the
  consumption of drugs.  Thus, the trial court precluded defendant from
  raising a defense claiming temporary insanity that resulted from either the
  direct intoxicating effects of drugs or solely the long-term use of drugs.
   
       ¶  86.  In seeking the instruction on insanity, defendant never
  claimed, and the expert witness never stated, that defendant's actions on
  the day of the offense were caused by intoxication-that is, an impaired
  mental state caused by the immediate effects of drugs or alcohol.  Instead,
  defendant relied upon a variation of fixed or settled insanity, a branch of
  the insanity defense whereby a prolonged, if not permanent, mental disease
  or defect is caused by long-term alcohol or drug abuse.  The trial court
  rejected the notion that settled insanity caused exclusively by drug use
  should be recognized as a defense in Vermont but found that this case
  involved an additional factor often not present in settled insanity
  cases-evidence that defendant had an underlying mental illness before he
  started abusing drugs and that his conduct was caused by both the
  underlying mental illness and his abuse of drugs.

       ¶  87.  The jury instruction represents a fusion of legal sources.  In
  choosing the language, the trial court concluded that, under the
  circumstances, a branch of the insanity defense developed by the
  Massachusetts Supreme Judicial Court [hereinafter the Massachusetts
  defense] applied because it dealt explicitly with a situation where there
  was a preexisting mental illness before the drug use.  The court relied
  particularly on the Massachusetts Supreme Judicial Court's decision in
  Herd.  There, the court applied the Massachusetts defense, which had been
  developed over a long line of cases, in a situation where the defendant
  also claimed settled insanity as a result of long-term drug use.  Under
  that defense, a lack of criminal responsibility is established if the
  "voluntary consumption of a drug activated a latent mental disease or
  defect and, as a result of that mental disease or defect, the defendant
  lost the substantial capacity to understand the wrongfulness of his conduct
  or to conform his conduct to the requirements of the law"-unless the
  defendant knew or had reason to know that the drug would activate the
  illness.  Herd, 604 N.E.2d  at 1298.
   
       ¶  88.  Although the backbone of the district court's language is the
  Massachusetts defense, the court added additional elements.  It recognized
  that the Massachusetts defense had been applied in cases in which the
  defendant was allegedly intoxicated at the time of the offense, thereby
  allowing the jury to determine whether the intoxication was such a
  controlling factor that it replaced the mental illness as the cause of the
  conduct.  The court rejected this application of the defense, however,
  requiring instead that the underlying mental illness be activated by
  long-term drug use in the absence of any intoxication.  In that sense, the
  instruction included aspects of the traditional fixed or settled insanity
  defense.  The court took its specification of the elements of that defense
  from Herd, 604 N.E.2d  at 1298-99, which in turn relied upon the leading
  case of People v. Kelly, 516 P.2d 875 (Cal. 1973), discussed infra, ¶¶
  114-19.

       ¶  89.  As I said in the opening points of this dissent, the trial
  court's instruction requiring elements from both the Massachusetts defense
  and the fixed or settled insanity doctrine represents the most restrictive
  insanity defense allowed anywhere in the country, apart from a few
  jurisdictions in which the issue is addressed by a specific statute. 
  Absent such a statute, no other court has required all of these elements in
  a case involving both drug or alcohol consumption and a mental disease or
  defect.  By its selective review of the facts, the majority suggests that
  defendant's offer of proof does not meet the elements the trial court
  developed in its instruction, particularly the elements derived from fixed
  or settled insanity.  As shown above, however, there were ample facts for a
  jury to conclude that (1) defendant had engaged in long-term drug use that
  activated an underlying, medically accepted mental illness; (2) the mental
  illness was independent of the intoxicating effects of the drugs and lasted
  for a substantial period of time after the murder-indeed, defendant's
  delusional thinking endured at least until the spring of 2001, several
  months after the killing; and (3) defendant did not know, nor could have
  known, that the drug use would trigger an underlying mental illness that
  would make him insane-in other words, he was incapable of conforming his
  actions to the requirements of the law.

                                    III.

       ¶  90.  Because the trial court's proposed instruction fuses elements
  from two sources, it is appropriate to look independently at each source
  against the background of our insanity statute and the relevant common law. 
  I first examine Vermont's insanity statute. 
   
       ¶  91.  The statutory test for insanity in Vermont, which is derived
  from and nearly identical to the Model Penal Code's provision on the
  insanity defense, is as follows: "A person is not responsible for criminal
  conduct if at the time of such conduct as a result of mental disease or
  defect he lacks adequate capacity either to appreciate the criminality of
  his conduct or to conform his conduct to the requirements of law."  13
  V.S.A. § 4801(a)(1); see State v. Smith, 136 Vt. 520, 523, 396 A.2d 126,
  127 (1978) (noting that § 4801 is derived from Model Penal Code § 4.01). 
  Defendant has the burden to prove insanity "by a preponderance of the
  evidence."  13 V.S.A. § 4801(b).  Because it is undisputed at this juncture
  of the case that defendant was unable to appreciate the criminality of his
  conduct or to conform his conduct to the requirements of the law at the
  time of the killing, the relevant question for purposes of this appeal is
  whether defendant's inability to do so was "a result of mental disease or
  defect."


       ¶  92.  As demonstrated above, there is ample evidence for a jury to
  conclude that, at the time of the alleged offense, defendant's inability to
  appreciate the criminality of his conduct or to conform his conduct to the
  requirements of the law was a result of a latent mental illness triggered
  by past drug use.  Indeed, the majority acknowledges Dr. Linder's opinion
  that but for the underlying mental illness, defendant's drug use would not
  have resulted in the psychotic state that led to the killing.  Dr. Lukas
  added that "Mr. Sexton's psychiatric condition is chronic and is not
  dependent on the use of LSD or other illicit drugs."  In other words, there
  is expert opinion supporting defendant's claim that his preexisting mental
  illness, independent of the effects of his drug use, was a cause in fact of
  the victim's death and a substantial factor-that is, a proximate cause-of
  the death.  Even assuming that defendant's psychotic state may not have
  occurred absent his drug use, there can be more than one proximate cause of
  defendant's insanity.  See Mobbs v. Cent. Vt. Ry., 155 Vt. 210, 219, 583 A.2d 566, 572 (1990) (trial court's use of indefinite article "correctly
  and unambiguously" informed jurors that more than one proximate cause is
  possible). Thus, under the plain meaning of the statute, defendant made a
  sufficient showing to enable his insanity defense to go to the jury.
   
       ¶  93.  The majority apparently disagrees, holding that defendant may
  not present an insanity defense under § 4801 even if he is insane as a
  result of a mental disease or defect, as long as the mental disease or
  defect would not have occurred absent his voluntary use of illegal drugs. 
  In support of this test, the majority relies upon decisions from
  jurisdictions with statutes-unlike § 4801-that explicitly preclude an
  insanity defense when prior drug use is a proximate cause of the
  defendant's mental condition.  See, e.g., Conn. Gen. Stat. § 53a-13(b)
  (2001) ("It shall not be a defense under this section if such mental
  disease or defect was proximately caused by the voluntary ingestion,
  inhalation or injection of intoxicating liquor or any drug or substance . .
  . ."); Del. Code Ann. tit. 11, § 401(c) (2001) (same); Wash. Rev. Code §
  10.77.030(3) (2002) ("No condition of mind proximately induced by the
  voluntary act of a person charged with a crime shall constitute
  insanity.").  Thus, in those jurisdictions, if drug use is one of several
  proximate causes of the alleged criminal conduct, no insanity defense is
  available.  See, e.g., State v. Hanson, 529 A.2d 720, 724 (Conn. App. Ct.
  1987) (where trial court was presented with conflicting evidence concerning
  defendant's mental condition, court's refusal to allow insanity defense was
  supported by "the plain language of the statute" disallowing insanity
  defense based on claim that mental disease was caused by voluntary
  ingestion of drugs); State v. Flagg, No. 9804019233, 1999 WL 167775, at *2
  (Del. Super. Ct. Mar. 10, 1999) (where statute forecloses insanity defense
  based on mental illness caused or exacerbated by drugs, defense is
  unavailable if insanity would not have occurred but for drug consumption
  because "[t]there may be more than one proximate cause of mental illness or
  insanity").

       ¶  94.  Obviously, those cases do not support the majority's
  construction of a statute that allows an insanity defense when the insanity
  is a result of a mental disease or defect-with no restriction on the
  etiology of that disease or defect.  Although the Legislature has
  explicitly foreclosed the insanity defense when a defendant's mental
  condition is "manifested only by repeated criminal or otherwise anti-social
  conduct," § 4801(a)(2), our statute does not preclude an insanity defense
  when a mental disease or defect is activated by voluntary drug use.  As I
  said in my opening, what the majority has done here is to impose the
  statutes of Connecticut, Delaware, and Washington on Vermont law, as if the
  Vermont Legislature had adopted them.  In fact, each of these statutes was
  adopted to change the law imposed by a more general statute and the common
  law.  If a similar change is to occur in Vermont, it must come from the
  Legislature, not this Court.
   
       ¶  95.    Hence, basic concepts of proximate cause dictate that the
  majority's test conflicts with § 4801.  "[C]ourts have generally treated
  legal causation in criminal law as in tort law . . . ."  1 W. LaFave,
  Substantive Criminal Law § 6.4(c), at 471 (2d ed. 2003); see, e.g., State
  v. Bass, 12 P.3d 796, 801 (Ariz. 2000) (setting same standard for
  determining superceding cause in criminal and tort cases); State v.
  McFadden, 320 N.W.2d 608, 613 (Iowa 1982) (affirming jury instruction that
  applied ordinary proximate cause principles to manslaughter statute).  As
  with tort liability, criminal liability requires both cause in fact and
  proximate cause. 1 W. LaFave, supra § 6.4(a), at 466.  Further, concurrent
  causes may "simultaneously create a condition that no single cause could
  have brought about."  Black's Law Dictionary 212 (7th ed. 1999); see Mobbs,
  155 Vt. at 219, 583 A.2d  at 572 (recognizing that there can be multiple
  proximate causes of accident).

       ¶  96.  Generally, the substantial-factor test is applied in multiple
  causation cases.  State v. McDonald, 953 P.2d 470, 474 (Wash. Ct. App.
  1998); see Barry v. Quality Steel Prods., Inc., 820 A.2d 258, 264 (Conn.
  2003) (defining proximate cause test as whether conduct is substantial
  factor in bringing about result, and defining concurrent cause as
  coexistent cause that actively joins other cause to bring about injury). 
  Under that test, if a certain act or condition was a substantial factor in
  bringing about a criminal offense, that act or condition is not prevented
  from being a proximate cause by proof of the fact that it alone would not
  have resulted in the offense.  See R. Perkins, Criminal Law § 9(c)(6), at
  610-611 (1957) (discussing multiple causation in context of murder).
   
       ¶  97.  The same principles should apply when we are dealing with an
  affirmative defense rather than the initial liability for the charged
  crime.  Cf. State Farm Mut. Auto. Ins. Co. v. Roberts, 166 Vt. 452, 455-56,
  697 A.2d 667, 669 (1997) (noting that under doctrine of concurrent
  causation, insurance policy provides coverage when liability of insured
  arises from concurrent but separate acts, only one of which is covered by
  policy).  At best, from the State's perspective, the evidence in this case
  indicates that defendant's insanity at the time of the alleged offense
  arose from a combination of his latent mental illness and his prior drug
  use; neither one of these causes, independently, would have resulted in
  defendant's insanity, but they both played a substantial and necessary role
  in creating his psychotic state.  Moreover, there was undisputed expert
  testimony that defendant had no way of anticipating that his drug use would
  trigger the psychotic state he was in at the time of the killing.  Cf.
  Estate of Sumner v. Dep't of Soc. & Rehab. Servs., 162 Vt. 628, 629, 649 A.2d 1034, 1036 (1994) (mem.) (noting that efficient intervening cause must
  be foreseeable).

       ¶  98.  Given this evidence, a jury could consider defendant's mental
  illness and his drug use to be separate, concurrent causes of his insanity
  and could conclude that his insanity-his inability to appreciate the
  criminality of his conduct or to conform his conduct to the requirements of
  the law-was a result of a mental disease or defect.  See id. (noting that
  proximate cause is ordinarily jury issue unless proof is so clear that
  reasonable minds could not reach different conclusions).  The Massachusetts
  defense, used in part by the trial judge, is simply an application of these
  standard principles of causation to the insanity defense so as to allow the
  defense to be raised when the evidence would support a jury determination
  that the mental illness caused-that is, was a cause in fact and a proximate
  cause of-the conduct for which the defendant is charged.

       ¶  99.  A review of the Massachusetts cases supports this point.  In
  Commonwealth v. Sheehan, 383 N.E.2d 1115, 1118-19 (Mass. 1978), the court
  rejected the notion that either drug addiction alone or the normal
  consequences of the ingestion of drugs could qualify as a mental disease or
  defect, but acknowledged that "if the consumption of drugs causes a mental
  disease or defect, apart from drug addiction itself, normally the defendant
  may rely on that mental disease or defect in support of his assertion of
  his lack of criminal responsibility, even if the defendant's drug
  consumption was voluntary."  Later, in Commonwealth v. Brennan, 504 N.E.2d 612, 616 (Mass. 1987), the court formally adopted the instruction that

    if the jury finds that the defendant had a latent mental disease
    or defect which caused the defendant to lose the capacity to
    understand the wrongfulness of his conduct or to conform his
    conduct to the requirements of the law, lack of criminal
    responsibility is established even if voluntary consumption of
    alcohol activated the illness, unless he had reason to know that
    the alcohol would activate the illness.
   
       ¶  100.  The Brennan court also noted that "the lack of
  substantial capacity must arise from the underlying disease or defect
  rather than the voluntary consumption of alcohol."  Id.  Nevertheless, in
  recognizing the necessity of a causal connection between the claimed mental
  disease and the defendant's inability to appreciate the wrongfulness of his
  conduct, the Supreme Judicial Court of Massachusetts has held that a
  defendant who was mentally ill at the time of the alleged offense is
  precluded from pleading insanity only if the defendant's inability to
  conform his conduct to the law is "solely" the result of his voluntary drug
  consumption.  See, e.g., Sheehan, 383 N.E.2d. at 1119; cf. Commonwealth v.
  Shelley, 409 N.E.2d 732, 738-39 (Mass. 1980) (rejecting defendant's
  insanity defense because, although experts testified that his consumption
  of one to nine beers may have facilitated his dissociative state without
  necessarily causing it, there was no evidence that his voluntary use of
  alcohol activated latent mental disease).


       ¶  101.  In contrast, under the majority's standard, a defendant
  cannot obtain an insanity defense if his insanity was caused to any
  significant degree by drug abuse.  As I stated in the opening, this
  effectively imposes an insurmountable burden on defendants, as recognized
  by the New Jersey Supreme Court in State v. Maik, 287 A.2d 715, 722 (N.J.
  1972):

    In the case at hand, the medical thesis was somewhat different,
    for the underlying illness from which the psychotic episode
    emerged was not caused by the use of drugs.  Rather the thesis was
    that the drugs, acting upon that underlying illness, triggered or
    precipitated a psychotic state which continued after the direct or
    immediate influence of the drug had dissipated, and that it was
    the psychosis, rather than the drug, which rendered defendant
    unable to know right from wrong at the time of the killing.  In
    other words, defendant urges that when a psychosis emerges from a
    fixed illness, we should not inquire into the identity of the
    precipitating event or action.  Indeed, it may be said to be
    unlikely that the inquiry would be useful, for when, as here, the
    acute psychosis could equally be triggered by some other stress,
    known or unknown, which the defendant could not handle, a medical
    opinion as to what did in fact precipitate the psychosis is not
    apt to rise above a speculation among mere possibilities.

  A "speculation among mere possibilities" is essentially the end of the
  inquiry under the standard imposed by the majority, particularly because
  defendant has the burden of proving insanity. (FN20) 

       ¶  102.  The majority holds that defendant may not present an insanity
  defense under § 4801 even if he is insane as a result of a mental disease
  or defect, so long as the mental disease or defect would not have occurred
  absent his voluntary use of illegal drugs. (FN21)  As noted, however, in so
  holding, the majority relies exclusively upon decisions from jurisdictions
  with statutes-unlike § 4801-that explicitly preclude an insanity defense
  when prior drug use is a proximate cause of the defendant's mental
  condition.  Thus, those decisions offer no support for the majority's
  position.
   
       ¶  103.  Apart from those decisions, the majority has come up
  with one federal case that it says supports its position on proximate
  causation-United States v. Henderson, 680 F.2d 659 (9th Cir. 1982).  Not
  surprisingly, it is an intoxication case where the evidence indicated that
  defendant's conduct could have been caused by his intoxication resulting
  from the consumption of alcohol immediately before the criminal conduct. 
  As I stated earlier, everyone agrees-as reflected in the trial court's
  proposed charge-that defendant cannot rely upon an insanity defense if his
  conduct was caused by the intoxicating effects of the drugs he took. 
  Ironically, in Henderson, the court concluded that "the Government failed
  to introduce sufficient evidence to meet its burden to prove that the
  alcohol, and not the mental disease, actually caused the defendant's mental
  incapacity when the crime was committed."  Id. at 662.

       ¶  104.  Beyond Henderson, the majority relies upon several
  inapplicable intoxication cases involving defendants who committed crimes
  while under the direct influence of intoxicating drugs and who did not have
  an independent, underlying mental disease or a settled mental condition
  brought on by long-term drug use.  See, e.g., United States v. Bindley, 157 F.3d 1235, 1241-42 (10th Cir. 1998) (defendant committed armed robbery
  while under influence of PCP-laced marijuana cigarette); People v. Velez,
  221 Cal. Rptr. 631, 632-33 (Cal. App. 1985) (defendant committed aggravated
  assault with deadly weapon while under influence of PCP-laced marijuana
  cigarette); State v. Hall, 214 N.W.2d 205, 207-08 (Iowa 1974) (defendant
  committed murder while under influence of LSD and did "not contend that
  extended use of drugs caused him 'settled or established' insanity"); State
  v. Sette, 611 A.2d 1129, 1132 (N.J. Super. Ct. App. Div. 1992) (defendant
  committed murder after ingesting large amounts of cocaine); Commonwealth v.
  Campbell, 284 A.2d 798, 799 (Pa. 1971) (defendant committed murder while
  under influence of LSD and amyl nitrate).  In short, those cases all
  involved intoxication as a defense, exactly what defendant has not raised
  here and what the trial court's instruction precluded.
   
       ¶  105.  In summary, the trial court's decision stands in
  stark contrast to the majority's refusal to allow an insanity defense
  unless the charged conduct would not have occurred but for the drug use. 
  In my view, we should accept the trial court's statement of the law because
  it applies standard principles of causation to defendant's burden under our
  insanity defense statute and allows the defense to be raised when the
  evidence would support a jury determination that the defendant's insanity
  was a result of a mental illness-which is all that is required by the
  statute.  I would accept the Massachusetts defense even if this were an
  intoxication case, but such a holding would be dicta on this record, and I
  recognize that the majority has some case law that can be interpreted as
  rejecting the Massachusetts defense in intoxication cases.  The majority's
  rejection of the Massachusetts defense in a non-intoxication case such as
  the instant one, however, is unexplained and unsupported.

                                     IV.

       ¶  106.  I could end this dissent at this point because adoption of
  the Massachusetts defense, with the additional element from the doctrine of
  fixed and settled insanity, would narrowly answer the certified question
  presented to us, and defendant has accepted the trial court's language
  without cross-appealing from it. (FN22)  But the majority has rejected the
  proposed instruction, including the element from the settled insanity
  defense, while stating "that this appeal [does not] present[] a suitable
  factual setting for resolution of the issue."  Ante, ¶ 27.  It is this
  decision that has created the greatest unfairness for defendant by changing
  the question that the district court certified to us.  I think it is beyond
  argument that defendant's offer of proof met the fixed or settled insanity
  elements found in the proposed instruction.  He has had no opportunity to
  argue that he could meet a more difficult standard.  The majority now tells
  him that it does not have a standard, but, if it did, he would not meet it. 
  Thus, not only has defendant been deprived of the opportunity to make an
  offer under an ascertainable standard, he faces appellate fact-finding
  inconsistent with the offer he did make. 
   
       ¶  107.  The unwillingness of the majority to address fixed or
  settled insanity is particularly curious because it has directly rejected
  the philosophical basis for the defense.  The trial court added to its jury
  instruction that in order to find insanity the jury must find that
  defendant neither "knew nor had reason to know that the drug would activate
  the illness."  The majority rejected that element because it "runs counter
  to the fundamental principle that a defendant is not excused from criminal
  liability for acts which result from a mental state that is self-induced
  through the voluntary ingestion of illegal drugs or alcohol."  Ante, ¶
  33.  The majority would be much more forthcoming by rejecting fixed or
  settled insanity as a defense rather than manipulating the facts to avoid
  that holding.

       ¶  108.  In my view, the trial court's and majority's rejection of a
  pure settled-insanity defense in this case is unsupportable.  In reaching
  its decision on settled insanity, the trial court adopted a narrow
  definition of mental disease or defect excluding any mental condition that
  was solely the result of drug usage.  This definition is plainly
  inconsistent with the Model Penal Code, and thus 13 V.S.A. § 4801.  Like §
  4801, § 4.01 of the Code neither defines the term "mental disease or
  defect" nor limits application of that term based on the etiology of the
  disease or defect; rather, the Code "treats the question of disease as one
  of fact, to be determined by the court or jury on the evidence presented in
  the cases that arise."  Model Penal Code § 4.01 cmt. 4 at 174 (1985); see
  also id. § 401 app. C at 212 (stating in model jury charge for
  jurisdictions following Code that question of whether mental disease or
  defect exists must be determined by triers of fact based on evidence before
  them, including testimony of medical experts); cf. State v. Bishop, 128 Vt.
  221, 227-28, 260 A.2d 393, 398 (1969) (noting that trial courts give
  considerable latitude in admitting evidence of insanity, and it is for jury
  to determine whether evidence pointing to defendant's sanity was sufficient
  to outweigh evidence of insanity).
   
       ¶  109.  Like Vermont, "[m]ost jurisdictions relying on the
  Model Code formulation have . . . not provided a definition of mental
  disease or defect."  Model Penal Code § 401 cmt. 5 at 176.  When those
  jurisdictions have departed from the Code by making the availability of the
  insanity defense dependent on the etiology of the mental disease or
  defect-in particular when drug use is a causative factor-they have
  generally done so legislatively.  Although our Legislature has expressly
  defined the term "mental disease or defect" in some ways, it has not chosen
  to limit the term in the way the majority has done today.  Both our statute
  and the Model Penal Code contain the so-called sociopath exception, which
  provides that a mental disease or defect does "not include an abnormality
  manifested only by repeated criminal or otherwise anti-social conduct."  13
  V.S.A. § 4801(a)(2); Model Penal Code § 4.01(2).  Further, § 4801(a)(2)
  explicitly provides that a mental disease or defect includes "congenital
  and traumatic mental conditions as well as disease."  13 V.S.A. §
  4801(a)(2).  Thus, the Legislature has demonstrated that it will limit or
  expand the definition of "mental disease or defect" when it sees fit; yet,
  nothing in § 4801 suggests that the Legislature intended to limit the
  insanity defense based on the particular etiology of the disease or defect
  or to exclude the defense when the mental disease or defect is induced or
  exacerbated by alcohol or drug use.

       ¶  110.  Moreover, the Model Penal Code, upon which our statute is
  based, treats the etiology of a "settled" mental disease or defect as
  immaterial with respect to the availability of the insanity defense, even
  when drugs are a causative factor.  As stated in its commentary on
  intoxication:

      Under the Model Penal Code as under existing law, it is immaterial
    that mental disease excluding responsibility was caused by
    excessive drinking and in that sense is attributable to the
    defendant.  This sort of disease, generally delirium tremens, is
    said to be "fixed" or "settled."  The same treatment is proposed
    for those periods of temporary disorientation (in alcoholic
    psychosis) that can occur after a long drinking bout.  The Model
    Code permits such cases to be dealt with under Section 4.01, and
    nothing in the formulation here undertakes to influence the
    resolution of the issue whether serious temporary disorientation
    from reality following intoxication constitutes "mental disease"
    within the meaning of that section.  The matter will become a
    question of the evidence that can be adduced on the occasion, as
    well as the development of the concept of "mental disease" in the
    general application of the insanity defense.

  Model Penal Code § 2.08 cmt. 2 at 362-63 (emphasis added) (footnotes
  omitted).

       ¶  111.  In dismissing the above-quoted comment because it is
  contained in a Code section on intoxication not formally adopted by this
  Court, the majority misses the point.  The question is not whether the
  commentary controls, but whether the common law controls.  The commentary
  merely notes the inescapable fact that settled insanity is widely accepted
  under existing common law, and, as this Court has often observed, "the
  common law 'controls unless modified by statute or case law.' "  State v.
  Francis, 151 Vt. 296, 305, 561 A.2d 392, 397 (1989) (quoting State v.
  LeBlanc, 149 Vt. 141, 142, 540 A.2d 1037, 1038 (1987)).
   
       ¶  112.  That the common law has long recognized settled
  insanity as a complete defense to criminal responsibility cannot be
  disputed.  It has been generally accepted that the existence of a mental
  disease or defect caused by the long-term effects of intoxicants warrants
  an insanity defense.  See J. Dressler, supra, § 24.05[B], at 329 ("The law
  distinguishes between mental impairment that does not extend beyond the
  period of voluntary intoxication, for which no defense is available, and
  insanity resulting from long-term use of drugs or alcohol."); 2 W. LaFave,
  supra, § 9.5(h), at 56-57.  ("[A] temporary mental condition brought about
  by use of alcohol or drugs, as compared to a 'settled' or 'established'
  form of insanity, is not sufficient for a defense of insanity.").  Although
  the subject finds little direct discussion in Vermont, one
  nineteenth-century case suggests that while voluntary intoxication may
  mitigate but generally does not excuse criminality, an insane person is not
  "punishable for his criminal acts" and "in the eye of the law a person in
  the paroxysms of delirium tremens was insane."  State v. Tatro, 50 Vt. 483,
  486 (1878) (summarizing trial court's jury charge).

       ¶  113.  The principle that long-term substance abuse may result in a
  settled or fixed mental disease sufficient to excuse criminality may be
  traced to early English common law, L. Tiffany, The Drunk, the Insane, and
  the Criminal Courts: Deciding What to Make of Self-Induced Insanity, 69
  Wash. U. L.Q. 221, 224-25 (1991), and has now been accepted by the vast
  majority of state courts (twenty-nine out of thirty at last count) that
  have considered the issue.  A. Levine, Denying the Settled Insanity
  Defense:  Another Necessary Step in Dealing with Drug and Alcohol Abuse, 78
  B.U. L. Rev. 75, 97 (1998); see also Herd, 604 N.E.2d  at 1299 ("The weight
  of authority in this country recognizes an insanity defense that is based
  on a mental disease or defect produced by long-term substance abuse."). 
  The only court that has rejected the defense did so primarily because it
  was inconsistent with that state's intoxication statute, which expressly
  provided that intoxication did not constitute a mental disease.  See Bieber
  v. People, 856 P.2d 811, 816 (Colo. 1993).  There is no equivalent Vermont
  statute.
   
       ¶  114.  The oft-cited modern case on settled insanity, People
  v. Kelly, 516 P.2d  at 883, is in all relevant respects identical to our
  case and stands for the generally accepted proposition that a mental
  illness triggered by drug use need only be settled, and not necessarily
  permanent, in nature to provide a complete defense to a crime.  The
  defendant in that case started taking drugs when she was fifteen years old
  and used mescaline and LSD up to 100 times in the months leading up to the
  day she attempted to stab her mother to death.  Several psychiatrists
  testified that the defendant had latent personality defects with a tendency
  to withdraw from reality but was not overtly schizophrenic until her
  repeated use of LSD triggered a psychotic state in which she was unable to
  distinguish right from wrong.  The court-appointed psychiatrist testified
  that the defendant most likely would have been sane at the time of the
  offense if she had not taken the LSD in the months preceding the crime. 
  Noting that defendant's psychosis extended well beyond the period in which
  she was under the direct influence of the LSD, id. at 878 n.9, the
  California Supreme Court reversed the trial court's rejection of the
  defendant's insanity defense because her psychosis, while not permanent,
  had become settled beyond the period of intoxication.  Id. at 882-83.
   
       ¶  115.  Although other courts have wrestled with the question
  of the length of time the psychotic state must last beyond the period of
  intoxication to be of a settled nature, see, e.g., People v. Skinner, 228 Cal. Rptr. 652, 660-61 (Cal. App. 1986) (holding that settled must mean
  fixed and stable for reasonable period of time and not solely result of
  recent ingestion of drugs, and refusing to allow settled insanity defense
  to defendant who murdered his wife shortly after free-basing cocaine), they
  have nonetheless generally agreed that the defense is available to
  defendants whose use of drugs resulted in a mental disease or defect that
  prevented them from appreciating the criminality of their conduct, as long
  as the resulting illness was settled for a reasonable period of time beyond
  the period of direct intoxication from the drugs.  See, e.g., Porreca v.
  State, 433 A.2d 1204, 1207-08 (Md. Ct. Spec. App. 1981) (reversing trial
  court's refusal to allow insanity defense where evidence indicated that
  defendant's long-time use of PCP, and possible latent mental disorder,
  triggered psychotic state that caused him to kill his wife and that lasted
  two to four months after direct intoxicating effects of drug had abated);
  People v. Conrad, 385 N.W.2d 277, 280-81 (Mich. Ct. App. 1986) (reversing
  trial court's refusal to allow insanity defense where evidence indicated
  that defendant's use of PCP triggered settled psychotic state that
  persisted for six weeks after his drug use and that resulted in murder of
  his brother); Maik, 287 A.2d  at 722 (rejecting trial court's instruction
  that insanity defense was not available where defendant's psychosis was
  triggered by his voluntary use of LSD and holding that defendant is
  entitled to insanity defense when drug use triggers settled psychotic state
  that prevented defendant from telling right from wrong).

       ¶  116.  The majority tries to get around Kelly, Porreca, Conrad, and
  Maik through appellate fact-finding that is totally inconsistent with the
  limited standard of review that it should be applying.  According to the
  majority, Kelly and Porreca are distinguishable because the defendants in
  those cases were long-term abusers of drugs.  Ante, ¶ 29 n.12.  Yet, the
  evidence in this case is very similar-defendant smoked marijuana for years
  and did other drugs before he began experimenting with LSD in the months
  leading up to the killing. (FN23)  The majority says that Maik is
  distinguishable because the evidence in that case indicated that the
  defendant's mental illness may have resulted from depression or a failed
  romantic relationship rather than LSD use.  Id.  Ironically, the evidence
  here is similar-one of the psychiatrists stated that factors like
  defendant's break-up with his girlfriend may have triggered his psychotic
  reaction.
                                     
       ¶  117.  In short, even though the evidence in this case is
  nearly identical to that in Kelly and its progeny, the majority insists
  that the Kelly line of cases is distinguishable because there is no
  "evidence that defendant here had developed a fixed insanity through
  long-term substance abuse."  Id.  As noted above, the majority's rhetoric
  that defendant's claim is "contrary to the very meaning of the doctrine"
  and "would defeat its meaning and underlying purposes" is grounded on its
  viewing the evidence most favorably to the State.  Id. ¶ 29.  In the end,
  as it ultimately acknowledges, see id. ¶ 29,  n.12, the majority is
  simply rejecting Kelly, along with the accepted common law in this country.

       ¶  118.  As noted, there was ample evidence demonstrating that
  defendant had abused drugs for years, culminating in his heavy use of LSD
  in the months leading up to the killing, and that his mental illness was
  chronic and lasted for months after the killing.  Moreover, as set out
  above, there was expert testimony that defendant's mental state at the time
  represented a settled psychosis resulting, at least in part, from his prior
  drug use.  The expert testimony indicated that the psychosis was not caused
  solely by the ingestion of the drugs, but rather was the result of a
  preexisting mental illness activated, at least in part, by drug use.  In
  short, just as the preexisting mental illness was a proximate cause of
  defendant's conduct, so was the drug ingestion.  The facts clearly support
  a settled insanity defense.

       ¶  119.  The latter sentence requires emphasis.  While I believe that
  Kelly and its progeny represent the appropriate standard to go to the jury,
  there is ample evidence for defendant to reach the jury on the standards
  contained in the cases cited by the majority.  See Allen v. State, 539 So. 2d 1124, 1126 (Ala. Crim. App. 1988) ("The trial judge properly refused to
  charge on mental disease or defect because the only evidence presented at
  trial was that defendant was suffering from voluntary intoxication.");
  State v. Valenzuela, 559 P.2d 201, 204 (Ariz. Ct. App. 1977) ("In the
  instant case, there was simply no evidence to support a finding that the
  appellant was suffering from an existing state of mental illness . . . .");
  People v. Free, 447 N.E.2d 218, 232 (Ill. 1983) ("There is no evidence in
  the record that this defendant was a habitual or chronic user of drugs or
  alcohol, or that the claimed disease or defect was 'settled' or 'fixed.'
  ").  Indeed, Dr. Lukas described defendant's condition as "chronic,"
  exactly the term the majority uses to describe a proper fixed or settled
  insanity defense.  Ante ¶¶ 26, 29 n.12.  The problem here is the majority's
  appellate fact-finding, not the strength of defendant's evidence.
   
       ¶  120.  In sum, only because defendant has not challenged the
  proposed instruction, I would answer the certified question in the
  affirmative and allow the jury instruction proposed by the district court. 
  I would add, however, that our acceptance of the instruction would be
  because of the posture of the case and not because a defense of fixed and
  settled insanity, as it is understood in the common law, falls outside the
  scope of 13 V.S.A. § 4801.
   
                                     V.

       ¶  121.  Proper adherence to common law doctrine in this case would
  require us to uphold the trial court's decision.  The majority's opinion is
  a pure policy decision imposed without regard to the governing statute and
  without regard to defendant's factual showing.  Absent legislative
  direction, I decline to join a decision that effectively denies defendants
  who commit offenses while mentally ill an opportunity to present to the
  jury an insanity defense that is not precluded by our insanity defense
  statute.  Notwithstanding the brutal and senseless nature of the offense
  committed in this case, we must not forget that "[i]t is as much the duty
  of the state to protect an insane man from conviction, as it is to prevent
  a sane man from escaping that result."  State v. Warner, 91 Vt. 391, 393,
  101 A. 149, 150 (1917).  I respectfully dissent.
       


                                       ___________________________________
                                       Associate Justice


------------------------------------------------------------------------------
                                  Footnotes


FN 1.  Chief Justice Amestoy sat for oral argument but did not
  participate in this decision.

FN 2.  The court later granted the State's motion to amend the
  information to charge Sexton with first-degree murder, but the State was
  subsequently granted leave to amend the charge back to second-degree
  murder.

FN 3.  See, e.g., State v. Shabazz, 169 Vt. 448, 454, 739 A.2d 666, 670
  (1999) (defining "wanton" as more than "mere recklessness," and describing
  its "long use[] to define malice aforethought for the purposes of criminal
  homicide").

FN 4.  The district court submitted the second certified question in
  response to the State's contention that defendant cannot claim diminished
  capacity if his voluntary intoxication exacerbated an underlying mental
  defect or disability.  A straightforward application of the principles
  described above, however, demonstrates that the State's position is without
  merit.  Simply put, if a defendant can claim diminished capacity based on
  the effects of voluntary intoxication, it follows a fortiori that a
  mentally disabled defendant is entitled to the same defense.

FN 5.  Although, as discussed infra, ¶¶ 30-35, the trial court's proposed
  instruction appears to  reject the traditional settled insanity doctrine in
  favor of a variation adopted in Massachusetts, we consider both doctrines
  since they are closely related and have been briefed by the parties.

FN 6.  Historians have noted the extraordinary amount of alcohol,
  particularly distilled liquors then known as "spirits," that Americans
  consumed during the first half of the nineteenth century.  See W.
  Rorabaugh, The Alcoholic Republic: An American Tradition 7 (1979) (noting
  the "consensus" of early nineteenth century observers that Americans drank
  "great quantities" of distilled liquors such as whisky, rum, gin, and
  brandy, often throughout the day).  Rorabaugh concludes that "[d]uring the
  first third of the nineteenth century the typical American drank more
  distilled liquor than at any other time in our history."  Id.   It is this
  historical context that helps to explain the origins of the settled
  insanity doctrine, and the true nature of the condition of the individuals
  to which it applied.  See, e.g., Beasley v. State, 50 Ala. 149, 151 (1874)
  (holding that it was error to fail to instruct on settled insanity where
  evidence showed that "for several years before the killing, the accused was
  'a great drunkard;' that he was 'generally drunk;' his habits were 'to
  drink from a half to one gallon of spirits every night, and large
  quantities before breakfast, and before dinner, and before supper each
  day;' " that several weeks before the killing "he had an attack of delirium
  tremens;" and that shortly before the murder he suffered delusions of
  "seeing 'witches and devils.' ").

FN 7.  The doctrine is not without its more contemporary critics.  The
  author of one seminal article has opined that "the moral culpability of
  long term alcohol abuse and society's interest in preventing criminal
  behavior weigh heavily in favor of denying the settled insanity defense." 
  Levine, supra, at 101.  Another commentator has noted the "injustice" and
  social costs of holding an intoxicated defendant responsible for his
  conduct while excusing another merely because he used enough drugs long
  enough to develop an underlying illness.  Note, Settled Insanity is Not a
  Defense, supra, at 270.  At least one court has rejected the doctrine as
  based on an indefensible distinction between the person who drinks or takes
  drugs and is "momentarily 'mentally defective' " and the person who drinks
  or takes drugs and is " 'mentally defective' as an eventual, long-term
  result."  Bieber v. People, 856 P.2d  at 816.

FN 8.   Although it was not at issue, an instruction to the effect that
  "in the eye of the law a person in the paroxysms of delirium tremens was
  insane" was apparently given by the trial court in the early case of State
  v. Tatro, 50 Vt. 483, 486 (1878), based on a claim that the defendant was
  "laboring under the effects of the long-continued use of intoxicating
  liquor."  Id. at 485. 

FN 9.  The commentary to MPC § 2.08, which deals with intoxication rather
  than insanity, and which has not been adopted in Vermont, provides:

    Under the Model Code, as under existing law, it is immaterial that
    mental disease excluding responsibility was caused by excessive
    drinking and in that sense is attributable to the defendant.  This
    sort of disease, generally delirium tremens, is said to be "fixed"
    or "settled."  The same treatment is proposed for those periods of
    temporary disorientation (in alcoholic psychosis) that can occur
    after a long drinking bout.  The Model Code permits such cases to
    be dealt with under Section 4.01, and nothing in the formulation
    here undertakes to influence the resolution of the issue whether
    serious temporary disorientation from realty following
    intoxication constitutes "mental disease" within the meaning of
    that section.

  Model Penal Code § 2.08, cmt. 2 at 362.

FN 10.   From his interviews with defendant and others, Dr. Linder
  observed that defendant was an "experimenter scientist type" who used LSD
  out of "an intellectual curiosity" in order to experience changes in his
  sensory perceptions.  Dr. Linder acknowledged that defendant was aware of,
  and expected, that the drug would alter his state of mind; he was allegedly
  unaware of the "degree" to which it would affect his perceptions.

FN 11.  A mental health evaluation of defendant the day after the crime
  conducted by a psychiatrist at the Vermont State Hospital reported "no
  abnormalities of thought processes, his thoughts were logical and
  coherent."  Defendant was responsive to questioning, his recent and
  long-term memory were intact, and although he appeared "hypomanic"
  (agitated) it was "without psychotic features."  Indeed, in ruling on a
  motion to suppress defendant's statements made to the police hours after
  the incident, the trial court found that defendant was sufficiently in
  touch with reality to knowingly and voluntarily waive his Miranda rights. 
  Further, Dr. Linder conducted a series of interviews with defendant,
  beginning on September 29, 2000, two days after the incident, and
  continuing through mid-November 2000.  Dr. Linder's summary and report of
  the interviews indicates that defendant was able to clearly recount the
  events leading up to the murder, and to recall many of his school and
  social experiences.  Although defendant continued to express certain
  bizarre thoughts during these interviews, Dr. Linder pronounced him
  competent to stand trial as of November 16, 2000.  In subsequent
  hospitalization proceedings, the court found that defendant remained
  competent to stand trial, was able to function adequately most of the time,
  and was not taking any anti-psychotic medications.

FN 12.  We recognize that the settled-insanity cases are not entirely
  uniform in their approach to the required duration of the defendant's
  mental illness before or after the offense.  The dissent relies, in
  particular, on four cases with some similarities to the facts here.  In an
  often-cited decision, People v. Kelly, 516 P.2d 875, 877 (Cal. 1973), the
  California Supreme Court applied the doctrine to a defendant who had used
  LSD and mescaline "in the months leading up to the offense," and who
  remained psychotic for several months after the drugs had worn off.  In
  Porreca v. State, 433 A.2d 1204, 1208 (Md. Ct. Spec. App. 1981), the court
  held that a defendant in a PCP-induced psychosis that lasted three to six
  months after the offense could invoke the doctrine.  In State v. Maik, 287 A.2d 715, 721-22 (N.J. 1972), the court held that a defendant who had
  killed an acquaintance in a psychotic state two months after ingesting LSD
  was entitled to an insanity defense.  And in People v. Conrad, 385 N.W.2d 277, 280-81 (Mich. Ct. App. 1986), the court held that a defendant who had
  used PCP four or five times during the two weeks preceding the murder, and
  whose psychotic symptoms lasted for several months thereafter, was entitled
  to invoke the defense.  We are not persuaded that these decisions compel a
  different result here.  First, we note that in Kelly there was evidence
  that the defendant had used drugs for three years before the offense, 516 P.2d  at 876-77, while in Porreca the evidence showed that the defendant had
  abused drugs for two years, including PCP "with some regularity," 433 A.2d 
  at 1206, and in Maik there was no evidence that the defendant's
  "schizophrenic break" was due to his LSD use, as opposed to depression
  resulting from a failed romantic relationship, 287 A.2d  at 719.  Second,
  while we question whether these decisions are consistent with the uniformly
  held requirement of a "permanent" or chronic mental illness, we base our
  holding on the absence of any evidence that defendant here had developed a
  fixed insanity through long-term substance abuse.  Finally, to the extent
  these decisions hold otherwise, we simply do not agree that the settled
  insanity doctrine has any application to a defendant who intentionally
  ingests a mind-altering substance for a period of about two months, and
  commits an offense shortly thereafter during a psychotic episode that would
  not have occurred but for the drugs.

FN 13.  Dr. Linder stated that defendant's reaction "was that seen rarely
  and more commonly manifested, when it does occur, in individuals vulnerable
  and genetically predisposed where the toxic effects of LSD interact with
  premorbid vulnerability to produce a sustained psychotic reaction." 
  (Internal quotation omitted).  Dr. Lukas similarly explained that studies
  had shown that persons with  a "genetic predisposition to schizophrenia,"
  or "premorbid" (undiagnosed) schizophrenic disorders "may experience
  pathological behavior that is temporally related to drug use," and that
  defendant's "mental health history clearly puts him in this category."

FN 14.  In his final report to the court, Dr. Linder stated that absent
  defendant's latent predisposition, his drug use probably would not have
  resulted in a psychotic reaction, and, equally, that but for the drug use,
  the latent condition probably would not have produced a psychotic reaction
  at the time of the offense.  As he explained: "Without the predisposing
  elements of his susceptibility, the drug use alone would have probably not
  led to the resulting psychotic condition.  Without the drug use, in an
  individual susceptible to decompensation as was Mr. Sexton, the
  deterioration probably would not have occurred within the same time frame
  and it may have been avoided altogether due to other interceding
  circumstances."  At his deposition, Dr. Linder again agreed that, "but for
  the drugs" that defendant had consumed, he probably would not have become
  psychotic.

FN 15.  Contrary to the assertion of our dissenting colleague, it is of
  no moment that the defendants in these decisions remained under the
  influence of drugs or alcohol at the time of the offense while defendant
  here may not have been under the immediate influence of LSD.   Even if it
  was the "latent" illness from which defendant's psychosis emerged, that
  illness was allegedly activated by defendant's two-month use of drugs, and
  he therefore remains liable for its consequences, anticipated or not (at
  least in the absence of evidence of a fixed insanity resulting from
  long-term substance abuse).

FN 16.   Although the dissent criticizes our holding for being limited to
  the use of "illegal" drugs that trigger a latent mental illness, post, ¶
  67, n.20, that is the precise language used by the trial court in the
  proposed instruction, and the issue that we certified for review.

FN 17.  As I discuss below, infra, ¶ 52-56, the majority's response,
  ante, ¶ 37, is to distort defendant's offer of proof.

FN 18.  The moral blameworthiness rationale is reinforced by the use of
  the word "illegal" in every reference to drugs.  The choice of phrasing
  makes unclear whether the majority's holding would also apply to a mentally
  ill alcohol abuser.  The decisions from other states make clear that the
  common law treats alcohol and drug abusers alike.  See J. Dressler, supra,
  § 24.01[A], at 319 ("[T]he law pertaining to intoxication does not
  distinguish between alcohol and other foreign substances, including
  prescribed medications and illegal drugs."); Commonwealth v. Campbell, 284 A.2d 798, 801 (Pa. 1971) (stating that overwhelming view of courts across
  country is that "there should be no legal distinction between the voluntary
  use of drugs and the voluntary use of alcohol in determining criminal
  responsibility for a homicidal act").   The majority's focus on illegal
  drug abusers reinforces that it is making a policy judgment that is in the
  province of the Legislature rather than this Court.

FN 19.  Again, the majority supports its rationale with cases dealing
  with intoxication, ante ¶ 43, exactly what is not involved in this case.

FN 20.  In passing, the majority states that when a defendant presents
  evidence of insanity, "the State may offer evidence to prove that the
  voluntary ingestion of intoxicants was an essential causal element of the
  insanity so as to refute the claim that it absolves the defendant of
  criminal responsibility."  Ante, ¶ 35.  In support of this proposition, the
  majority cites State v. Hanson, 529 A.2d 720, 724 (Conn. App. Ct. 1987),
  wherein a Connecticut appellate court made a similar statement after noting
  that Connecticut's insanity statute explicitly precluded an insanity
  defense if the voluntary ingestion of drugs proximately caused the mental
  illness.  The Hanson court was also reviewing whether the trial court, in
  acting as factfinder, properly rejected the insanity defense, not whether
  the defendant should have had an opportunity to present the defense to the
  factfinder.  Id.  In any event, our statute provides that "[t]he defendant
  shall have the burden of proof in establishing insanity as an affirmative
  defense by a preponderance of the evidence."  13 V.S.A. § 4801(b).  Thus,
  at most, the majority is imposing a burden of production on the State, with
  the defendant retaining the burden of proving that he is entitled to an
  insanity defense.

FN 21.  It is difficult to pin down the standard the majority is using. 
  It is described often as the "essential causal element" standard, ante ¶
  33, but ¶ 35 makes clear that it is a traditional "but for" test.  Note
  that where, as here, the defendant has the burden of proof, the defendant
  must prove that drug use does not meet the "but for" test.

FN 22.  Although defendant requests that we "affirm the trial court's
  rulings below," he briefed the case as a settled insanity case.

FN 23.  The facts of this case and Kelly are so nearly identical that the
  facts of one opinion could be substituted with the facts of the other
  without the reader even noticing.



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