The history of cannabis in the United States is a complex journey shaped by shifting social attitudes, political movements, and evolving laws. From early 20th-century prohibition to the sweeping legalization efforts of the 21st century, cannabis policy has reflected broader debates about medicine, criminal justice, and individual freedom. This timeline traces key moments in U.S. cannabis history—highlighting landmark legislation, court rulings, and cultural turning points that have shaped how the country views and regulates the plant today.
This is a work in progress.
California - Nov. 5, 1996
California voters approved Proposition 215, also known as the Compassionate Use Act, making it the first state in the U.S. to legalize medical marijuana.