Delta 9 THC products were made legal by H.R. 2: The Agricultural Improvement Act of 2018, commonly referred to as the 2018 Farm Bill. It was specifically made legal when hemp allowed for all products that had less than 0.3% by weight. This means that edibles, which have a higher weight, can still contain enough quantities of Delta 9 THC to feel the desired effects and maintain legality because Delta 9 makes up less than 0.3% of the entire product.