2016 US Code
Title 18 - Crimes and Criminal Procedure
Part I - Crimes
Chapter 109A - Sexual Abuse
Sec. 2246 - Definitions for chapter

(A) contact between the penis and the vulva or the penis and the anus, and for purposes of this subparagraph contact involving the penis occurs upon penetration, however slight;

(B) contact between the mouth and the penis, the mouth and the vulva, or the mouth and the anus;

(C) the penetration, however slight, of the anal or genital opening of another by a hand or finger or by any object, with an intent to abuse, humiliate, harass, degrade, or arouse or gratify the sexual desire of any person; or

(D) the intentional touching, not through the clothing, of the genitalia of another person who has not attained the age of 16 years with an intent to abuse, humiliate, harass, degrade, or arouse or gratify the sexual desire of any person;

(A) detention by a Federal officer or employee, or under the direction of a Federal officer or employee, following arrest for an offense; following surrender in lieu of arrest for an offense; following a charge or conviction of an offense, or an allegation or finding of juvenile delinquency; following commitment as a material witness; following civil commitment in lieu of criminal proceedings or pending resumption of criminal proceedings that are being held in abeyance, or pending extradition, deportation, or exclusion; or

(B) custody by a Federal officer or employee, or under the direction of a Federal officer or employee, for purposes incident to any detention described in subparagraph (A) of this paragraph, including transportation, medical diagnosis or treatment, court appearance, work, and recreation;