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

https://zanderssplendidinsight.hexaforgey.com/posts/are-industry-groups-lobbying-for-regulation-instead-of-a-ban

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