Whether a federal court of appeals can reject a defendant's testimony denying the requisite criminal knowledge as implausible in determining that a preserved trial error was harmless

QUESTIONS PRESENTED 1. Whether a federal court of appeals can reject a defendant’s testimony denying the requisite criminal knowledge as implausible in determining that a preserved trial error was harmless. 2. Whether the knowingly mens rea in the federal drug statutes, 21 U.S.C. §§ 841, 960, applies to the elements of drug type and quantity that establish mandatory minimum and enhanced maximum sentences. i STATEMENT OF RELATED CASES . United States v. Salvador Acosta, No. 17CR03289-AJB, U.S. District Court for the Southern District of California. Judgment entered January 11, 2019. . United States v. Salvador Acosta, No. 19-50007, U.S. Court of Appeals for the Ninth Circuit. Judgment entered December 15, 2020 and rehearing denied February 22, 2021. ii