The December 11 US hemp rule change counts total THC, including THCA, and caps...

https://mighty-wiki.win/index.php/Why_Does_the_New_Rule_Hit_Flower_Shipments_Harder_Than_Extracts%3F

The December 11 US hemp rule change counts total THC, including THCA, and caps THC at 0.4 mg per container. It may push demand toward THC-free inputs with batch lab reports, the clearest path for buyers seeking compliant products.