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

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

The December 11 U.S. hemp rule counts total THC, including THCA, and caps THC at 0.4 mg per container. That puts pressure on demand for intoxicating hemp products and raises the value of inputs that can meet the limit