The Dec. 11 US hemp rule counts total THC, including THCA, and caps each...

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

The Dec. 11 US hemp rule counts total THC, including THCA, and caps each container at 0.4 mg. It may shift demand away from products over the limit. THC-free inputs with batch lab reports are the clearest path for brands.