Anti-Preemption Statements In Federal Drug Law Exist, Therefore No, Federal Law Does Not Preempt State Medical Marijuana Laws

For the sake of completeness, 21 USC 903 is an anti-preemption statement in the federal drug law. See, Gonzales v. Oregon, 546 U.S. 243 (2006). 21 USC 822(d) allows the DEA to grant exemptions. 21 CFR 1307.03 is an application for exemption.