Starting Nov 12, 2026, federal hemp rules shift to total THC, including THCA....

https://www.joint-bookmarks.win/the-2026-hemp-definition-change-brings-two-dates-to-watch-nov-12-and-dec-11

Starting Nov 12, 2026, federal hemp rules shift to total THC, including THCA. By Dec 11, products must meet a 0.4 mg total-THC cap per container. Check labels and ask shops how each item complies.