United States Court of Appeals For the Seventh Circuit No. 18-1541 UNITED STATES OF AMERICA, Plaintiff-Appellee,

v. MARCOS CASTANEDA, Defendant-Appellant.

Appeal from the United States District Court for the Western District of Wisconsin. No. 3:17-cr-00038-jdp-1 — James D. Peterson, Chief Judge.

ARGUED OCTOBER 2, 2018 — DECIDED OCTOBER 19, 2018

Before BAUER, KANNE, and SCUDDER, Circuit Judges. BAUER, Circuit Judge. Marcos Castaneda pleaded guilty to transporting methamphetamine as part of a 20-person con- spiracy. Though the district court sentenced his coconspira- tors based on findings that they distributed mixtures contain- ing methamphetamine, it sentenced Castaneda based on his handling of a smaller quantity of “Ice,” or especially pure (at least 80%) methamphetamine. Pound for pound, the Sentenc- ing Guidelines recommend punishing Ice-related crimes 2 No. 18-1541 more severely than crimes involving less-pure methampheta- mine. The co