United States v. Sago, No. 22-5011 (10th Cir. 2023)
Annotate this CaseDefendant Kyle Sago appealed murder convictions committed in Indian country and causing death by use of a firearm during and in relation to a crime of violence (namely, first- or second-degree murder). The jury was instructed on first-degree murder, second-degree murder, and self-defense. On appeal Sago argued the district court plainly erred in providing model jury instructions on first- and second-degree murder that inadequately defined the required element of malice. Specifically, he argued the instructions omitted the mitigation defense referred to as “imperfect self-defense:” the instructions were defective in that they failed to inform the jury that it could not find that Sago acted with malice unless it found that he was not acting in the sincere belief (even if the belief was unreasonable) that the use of deadly force was necessary. The Tenth Circuit affirmed: a mitigating circumstance instruction negates the malice element of first- and second-degree murder and must be accompanied by a lesser-included-offense instruction to inform the jury of the offense on which it could convict the defendant in light of the mitigating circumstance. And here, Sago did not request a relevant lesser-included-offense instruction for involuntary manslaughter. Therefore, the trial court did not err in declining to instruct on the mitigating circumstance.
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