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

https://orcid.org/0009-0005-1124-4638

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.