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

https://en.mercopress.com/2026/10/14/new-us-hemp-rules-take-effect-december-11-shifting-demand-for-south-american-exporters

The December 11 US hemp rule counts total THC, including THCA, and caps THC at 0.4 mg per container. It narrows the market and shifts demand toward compliant products. THC-free inputs backed by batch lab reports are the clearest path.