From Dec. 11, the US hemp rule counts total THC, including THCA, and caps it at...

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

From Dec. 11, the US hemp rule counts total THC, including THCA, and caps it at 0.4 mg per container. That narrows eligible products and may shift demand toward THC-free inputs with batch lab reports—the clearest path.