United States v. Brendon Janis, 995 F.3d 647

Brendon Dale Janis was convicted by a jury of conspiracy to distribute methamphetamine and unlawful possession of firearms in violation of federal law; district court sentenced him to 180 months (conspiracy) and 60 months (firearms), concurrent.
At trial defense counsel questioned cooperating prosecution witnesses about benefits from cooperation, referencing "Rule 35" and suggesting cooperation could yield sentence reductions.
The district court explained Federal Rule of Criminal Procedure 35 to the jury, clarifying the Rule is discretionary, judges decide any reduction, and there is no assurance of a 50% cut; defense did not object to the court’s comments.
The jury convicted Janis of a conspiracy involving at least 500 grams of methamphetamine; at sentencing the court attributed 1,500 grams to Janis based on trial testimony and other evidence.
Janis challenged (1) the court’s Rule 35 explanation as improper vouching for witness credibility, (2) reliance on trial testimony for increasing drug-quantity at sentencing, and (3) a supervised-release condition allowing a probation officer to require risk-notification to third parties as vague and an unconstitutional delegation.
The Eighth Circuit affirmed the conviction and sentence, rejecting Janis’s challenges.

Issue	Janis's Argument	Government's Argument	Held
Whether the district court improperly vouched for witness credibility by explaining Rule 35 to the jury	Court’s Rule 35 explanation vouched for prosecution witnesses and prejudiced the jury	Court’s explanation accurately described the law and corrected ambiguity created by defense questioning	Affirmed — explanation was accurate, remedial, and not plain error; jury instructions overall protected against vouching
Whether the court erred by relying on trial testimony to calculate drug quantity (sentencing 1,500g vs. jury’s 500g)	Court needed explicit on-the-record factual findings rather than general reference to trial testimony	District court may rely on credible trial testimony and approximate quantities when seizures don’t reflect scale	Affirmed — drug-quantity finding not clearly erroneous; reliance on trial testimony permissible
Whether the supervised-release condition (probation officer may require defendant to notify third parties of risk) is vague or an unconstitutional delegation	Condition is vague ("risk" undefined) and improperly delegates judicial authority to a probation officer	Condition is sufficiently ascertainable because officer must identify and communicate the risk first and the court retains ultimate authority	Affirmed — condition not unconstitutionally vague or an improper delegation under circuit precedent

United States v. Thomas, 422 F.3d 665 (8th Cir. 2005) (jury-instruction review standard)
United States v. Fast Horse, 747 F.3d 1040 (8th Cir. 2014) (plain-error review explained)
United States v. Baldenegro-Valdez, 703 F.3d 1117 (8th Cir. 2013) (upholding instruction about witness cooperation as correct statement of law)
United States v. Quintana, 340 F.3d 700 (8th Cir. 2003) (credibility determinations at sentencing)
United States v. Plancarte–Vazquez, 450 F.3d 848 (8th Cir. 2006) (coconspirator testimony may support sentencing quantity)
United States v. Walker, 688 F.3d 416 (8th Cir. 2012) (court should approximate drug quantity when seized amount is not indicative)
United States v. Robertson, 948 F.3d 912 (8th Cir.) (upholding similar risk-notification supervised-release condition)
United States v. Thompson, 653 F.3d 688 (8th Cir. 2011) (delegation doctrine: invalid only if court disclaims ultimate authority)