December 11’s US hemp rule counts total THC, including THCA, and caps it at 0.4...

https://wiki-dale.win/index.php/What_Changes_on_December_11_for_US_Hemp_Rules%3F

December 11’s US hemp rule counts total THC, including THCA, and caps it at 0.4 mg per container. That is likely to reduce demand for intoxicating hemp products and favor THC-free inputs backed by batch lab reports—the clearest path to compliance.