Appealing the judgment in a criminal case, Daniel Lopez raises arguments that he concedes are foreclosed by United States v. Betancourt, 586 F.3d 303, 308-09 (5th Cir. 2009), cert. denied, — U.S.-, 130 S.Ct. 1920, 176 L.Ed.2d 390 (2010), which reaffirmed the holding in United States v. Gamez-Gonzalez, 319 F.3d 695, 700 (5th Cir. 2003), that knowledge of drug type and quantity is not an element of the offense under 21 U.S.C. § 841. Lopez’s unopposed motion for summary disposition is GRANTED, and the judgment of the district court is AFFIRMED.