Interim regulation of the United States Drug Enforcement Agency that took effect on August 21, 2020 and purported to clarify changes to federal law as a result of the Agriculture Improvement Act of 2018. The rule holds that all synthetic cannabinoids, and any hemp derivatives containing more than .3% Δ9-tetrahydrocannabinol (THC) are deemed marijuana for purposes of the Controlled Substances Act. The rule is currently being challenged in federal court.