Congress passed the change on Nov. 12, 2026, and it takes effect Dec. 11....

https://www.bright-bookmarks.win/the-2026-hemp-definition-change-brings-two-dates-to-keep-straight-nov-12-and

Congress passed the change on Nov. 12, 2026, and it takes effect Dec. 11. Federal rules will count total THC, including THCA, and cap covered hemp products at 0.4 mg per container—so some items may change or leave shelves.