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

https://super-wiki.win/index.php/What%E2%80%99s_the_Biggest_Risk_for_South_American_Hemp_Exporters_Under_Total_THC%3F

The December 11 U.S. hemp rule change counts total THC, including THCA, and caps it at 0.4 mg per container