Even though hemp played a significant role in the world’s agricultural and pharmacological history for thousands of years, it was an illegal substance for the last 80 years. Fortunately, that all changed on December 20, 2018, when the Agricultural Improvement Act of 2018 was signed into law. Under this bill, hemp was removed from the list of Schedule 1 substances and is now legal as long as it contains 0.3% THC by dry weight or less.