Federal hemp rules shift on Nov. 12, 2026, with changes scheduled for Dec. 11....

https://www.bookmark-zulu.win/a-major-change-to-the-federal-hemp-definition-is-coming-in-2026-the-timeline

Federal hemp rules shift on Nov. 12, 2026, with changes scheduled for Dec. 11. The definition counts total THC, including THCA, and caps THC at 0.4 mg per container—so check labels and COAs before buying.