The Dec. 11 U.S. hemp rule counts total THC, including THCA, and caps it at 0.4...

https://www.foxtrot-bookmarks.win/the-december-11-us-hemp-rule-counts-total-thc-including-thca-and-caps-thc-at

The Dec. 11 U.S. hemp rule counts total THC, including THCA, and caps it at 0.4 mg per container. That narrows demand for intoxicating hemp products and favors THC-free inputs backed by batch lab reports—the clearest compliance path.