On Mar. 20, 2024, the U.S. Department of Agriculture (USDA) announced they had reviewed a University of Wisconsin hemp modified for reduced levels of tetrahydrocannabinol (THC) and cannabidiol (CBD). APHIS found these modified plants were unlikely to pose an increased plant pest risk compared to other cultivated plants.

As a result, they are not subject to regulation under 7 CFR part 340. From a plant pest risk perspective, these modified plants may be safely grown and bred in the U.S.