The December 11 U.S. hemp rule counts total THC, including THCA, and caps THC...

https://wiki-velo.win/index.php/Why_Are_THC-Free_Ingredients_Suddenly_in_Higher_Demand%3F

The December 11 U.S. hemp rule counts total THC, including THCA, and caps THC at 0.4 mg per container. That narrows eligible products and may shift demand toward compliant, low-THC goods. THC-free inputs backed by batch lab reports are the clearest path.