The History of Cannabis Prohibition in the United States From Medicine to Criminalization — and the Road to Reform By Justice, Elevated Club NYC

Cannabis wasn’t always illegal in the United States.

For much of American history, cannabis was a common part of daily life—sold in pharmacies, prescribed by doctors, and cultivated as an agricultural staple. Its criminalization was not the result of new scientific discoveries or overwhelming medical evidence, but rather a century-long process shaped by fear, racism, politics, and misinformation.

Understanding this history is essential—not just for cannabis consumers, but for anyone interested in justice, culture, and truth.

Cannabis Before Prohibition: A Legal Medicine

In the 1800s and early 1900s, cannabis extracts and tinctures were widely available in the U.S. They were used to treat pain, insomnia, migraines, and digestive issues. Hemp was also a critical industrial crop, used for rope, textiles, and paper.

There was no national stigma attached to cannabis. It wasn’t associated with crime, addiction, or moral panic. Simply put, cannabis was legal—and largely uncontroversial.

Early Restrictions and the Birth of Fear

That began to change in the early 20th century.

As Mexican immigrants arrived in the U.S. following the Mexican Revolution, cannabis—referred to as “marihuana”—became associated with immigrant communities. Local and state governments quietly passed restrictions in the 1910s and 1920s, often without public debate or scientific backing.

These early laws were driven less by public health concerns and more by xenophobia and racialized fear. Sensationalized media stories portrayed cannabis as a substance that caused violence, insanity, and moral decay—claims that were unsupported by evidence but effective in shaping public opinion.

1937: The Marihuana Tax Act

The turning point came in 1937 with the Marihuana Tax Act.

Rather than banning cannabis outright, the federal government imposed strict taxes and regulations that made legal possession nearly impossible. The law was championed by Harry J. Anslinger, head of the Federal Bureau of Narcotics, who led a nationwide propaganda campaign linking cannabis to crime and minority communities.

This era produced infamous films and headlines—most notably Reefer Madness—that cemented cannabis as a societal threat in the American imagination.

In practice, the Marihuana Tax Act marked the beginning of federal cannabis prohibition.

The Controlled Substances Act and the War on Drugs

In 1970, cannabis was officially classified as a Schedule I substance under the Controlled Substances Act—defined as having “no accepted medical use” and a high potential for abuse.

This classification ignored both historical use and emerging scientific evidence. It also restricted research, making it difficult to challenge the designation.

Throughout the 1980s and 1990s, the War on Drugs intensified enforcement. Cannabis possession led to arrests, incarceration, and lifelong consequences—disproportionately impacting Black and Brown communities, despite similar usage rates across racial groups.

Cannabis prohibition became a tool of criminalization, not public health.

The Turning Point: Medical Cannabis Returns

In 1996, California passed Proposition 215, becoming the first state to legalize medical cannabis.

This moment marked a major shift. Patients regained legal access, doctors re-entered the conversation, and states began challenging federal policy. Over the next two decades, medical programs expanded across the country, followed by adult-use legalization starting in 2012.

Public opinion changed as education, research, and lived experience replaced fear-based narratives.

Where We Are Today

Today, cannabis legalization continues to spread, while federal reform inches forward through rescheduling discussions, expungement efforts, and equity programs.

But the legacy of prohibition remains.

Millions still carry criminal records for actions that are now legal in many states. Communities disproportionately harmed by enforcement are still fighting for meaningful inclusion in the legal industry. And misinformation persists—despite a growing body of scientific research.

Why This History Matters

Cannabis legalization is not just about access—it’s about accountability.

It’s about acknowledging that prohibition was never rooted in science, and that its consequences shaped generations. Education allows us to understand where we’ve been, challenge where we are, and build something better moving forward.

At Elevated Club NYC, we believe that knowing the history is part of responsible cannabis culture.

Because education is elevation.

— Justice

Elevated Club NYC