Appealing the judgment in a criminal case, Oscar Delgadillo raises an argument that he concedes is foreclosed by United States v. Betancourt, 586 F.3d 303, 308-09 (5th Cir. 2009), which held that knowledge of drug type and quantity is not an element of a 21 U.S.C. § 841 offense. Knowledge of drug type and quantity likewise is not an element of offenses under the related statutes of 21 U.S.C. § 952(a) and § 960(a). United States v. Valencia-Gonzales, 172 F.3d 344, 345-46 (5th Cir. 1999); United States v. Restrepo-Granda, 575 F.2d 524, 527 (5th Cir. 1978). The unopposed motion for summary disposition is GRANTED, and the judgment of the district court is AFFIRMED.