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

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 change counts total THC, including THCA, and caps THC at 0.4 mg per container. That puts demand for intoxicating hemp products under pressure and increases the need for inputs that can meet the limit consistently