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 it at 0.4 mg per container. That puts pressure on demand for intoxicating hemp products and may shift buyers toward products made without THC