The Cannabis Legalization Movement

The US Controlled Substances Act classifies cannabis as a Schedule I drug, determined to have a high potential for abuse and no accepted medical use, effectively prohibiting its use for any purpose at the federal level. This classification becomes the central legal target of the legalization movement.

Oregon becomes the first state to decriminalize cannabis, reducing possession of small amounts to a civil violation rather than a criminal offense. Several other states follow over the next decade, marking the beginning of state-level resistance to federal prohibition.

California voters pass Proposition 215, the Compassionate Use Act, making California the first state to legalize medical cannabis. This sparks a trend that spreads to a majority of states over the next two decades, fundamentally shifting the drug policy landscape in the United States.

Voters in Colorado and Washington pass ballot initiatives legalizing recreational cannabis — the first states to do so. The first legal recreational sales begin in Colorado on January 1, 2014, creating the first regulated commercial cannabis markets in the United States.

Uruguay becomes the first country in the world to fully legalize cannabis for recreational use, with the government regulating production, distribution, and sales. Signed into law by President Jose Mujica, it establishes the first national legal cannabis market.

The US Congress passes the Rohrabacher-Farr amendment, prohibiting the Justice Department from interfering with state medical cannabis laws. The amendment must be renewed annually but represents the first significant congressional check on federal cannabis enforcement.

The Cannabis Act comes into effect, making Canada the second country and first G7 nation to legalize cannabis for recreational use nationwide. Prime Minister Justin Trudeau's government oversees the creation of a federally regulated production and retail system.

The 2018 Farm Bill is signed into law, legalizing hemp (cannabis with less than 0.3% THC) and hemp-derived compounds like CBD at the federal level, effectively descheduling low-THC cannabis products from the Controlled Substances Act for the first time since 1937.

Germany passes the Cannabis Act (CanG), legalizing adult-use cannabis through non-commercial cultivation associations. As Europe's largest economy, Germany's move shifts the European policy landscape dramatically. In 2026, Germany launches a regulated commercial supply chain pilot.

The US Department of Justice proposes reclassifying cannabis from Schedule I to Schedule III under the Controlled Substances Act, acknowledging its accepted medical use. The policy shift represents the most significant change in US federal cannabis policy in over 50 years. By 2026, 38 states have medical cannabis programs and 24 have legalized recreational use.

Following an executive order directing the Justice Department to expedite reform, the DEA published a final rule moving FDA-approved marijuana products and marijuana from state-licensed medical cannabis programs from Schedule I to Schedule III of the Controlled Substances Act -- the first loosening of federal marijuana scheduling since 1970 and a major milestone for the legalization movement. State-licensed medical marijuana businesses gained access to federal registration protections, banking relief, and relief from the punitive 280E tax provision. The broader question of rescheduling all marijuana remained contested: opponents including Smart Approaches to Marijuana and the states of Nebraska, Idaho, Indiana, and Louisiana participated in an administrative hearing beginning June 29, 2026, arguing the change ignored public health risks, while supporters cited decades of state-level legalization and medical consensus on cannabis therapeutic value.