The History of Cannabis Prohibition in the U.S.
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The History of Cannabis Prohibition in the U.S.

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The History of Cannabis Prohibition in the U.S.

The legal status of cannabis in the U.S. isn’t always clear. At the federal level, it is an illegal Schedule I drug. However, individual states have the ability to determine their own laws around cannabis sales and usage.

But cannabis was not always illegal at the top level. It was only in the last 100 years that cannabis faced a prohibition similar to the alcohol prohibition of the early 1920s.

In this infographic from Tenacious Labs, we explore the fascinating history of cannabis prohibition in the U.S. dating all the way back to the 1900s.

The Early History of Cannabis Legality

The earliest laws surrounding the cannabis plant in the U.S. were drafted before the country was even founded. In 1619, a law was passed in the colony of Virginia which required every single farm to grow cannabis and produce hemp, an important commodity at the time.

Over time, marijuana from the cannabis plant started to be used for medicinal purposes. Early recreational use was first introduced by Mexican immigrants in the early 1900s.

Flash forward to the 1930s, when the country was struggling financially during the Great Depression. To encourage economic growth, alcohol prohibition was lifted, and those who had supported teetotalling began to target marijuana instead. At the time, cannabis was consumed largely in black and Mexican communities, and racist attitudes began to shape an association between crime, lewd behavior, immorality, and marijuana.

Legal Changes

The 1930s marked the beginning of America’s war against marijuana. Here’s a glance at some of the most famous laws around cannabis prohibition:

  • The Marihuana Tax Act (1937)
  • The Boggs Act (1952)
  • The Narcotics Control Act (1956)
  • The Controlled Substances Act (1971)

In 1937, the Marihuana Tax Act was enforced, prohibiting marijuana federally but still allowing medical use. Prior to that, 29 states had already outlawed marijuana on their own.

But by the 1950s, a counterculture movement had begun, with young people using marijuana recreationally much more than previous generations.

Eventually, the Boggs Act (1952) and Narcotics Control Act (1956) were put in place to combat the counterculture. These laws set mandatory sentences for drug-related offenses, including marijuana. A first-offense marijuana possession conviction could result in a minimum sentence of 2-10 years with a fine of up to $20,000.

In 1970, cannabis was classified as a Schedule I drug—the same category as heroin—under the Controlled Substances Act. However, the 70s also saw an opposing shift, with a number of states beginning to decriminalize marijuana. ℹ️ Decriminalization means that although possessing marijuana remains illegal, one is not subject to prosecution or jail time for possessing certain amounts.

After decriminalization, commercial businesses began to capitalize and started to market marijuana-related products. Some products were marketed towards children, which, in tandem with the intensive hippie culture from the 70s, sparked a war against marijuana led by parents and supported by president Ronald Reagan.

The Modern Era

During the 1990s, five states passed laws to allow the medical usage of marijuana—between 2010 and 2020, 16 states passed medical marijuana laws.

StateState Level Legal Status Of Cannabis
AlabamaLegal for medical use
AlaskaLegal
ArizonaLegal
ArkansasLegal for medical use
CaliforniaLegal
ColoradoLegal
ConnecticutLegal
DelawareLegal for medical use
FloridaLegal for medical use
GeorgiaLegal for medical use
HawaiiLegal for medical use
IdahoIllegal
IllinoisLegal
IndianaLegal for medical use
IowaLegal for medical use
KansasIllegal
KentuckyIllegal
LouisianaLegal for medical use
MaineLegal
MarylandLegal for medical use
MassachusettsLegal
MichiganLegal
MinnesotaLegal for medical use
MississippiLegal for medical use
MissouriLegal for medical use
MontanaLegal
NebraskaIllegal, decriminalized
NevadaLegal
New HampshireLegal for medical use
New JerseyLegal
New MexicoLegal
New YorkLegal
North CarolinaLegal for medical use
North DakotaLegal for medical use
OhioLegal for medical use
OklahomaLegal for medical use
OregonLegal
PennsylvaniaLegal for medical use
Rhode IslandLegal for medical use
South CarolinaLegal for medical use
South DakotaLegal for medical use
TennesseeLegal for medical use (Limited)
TexasLegal for medical use (Limited)
UtahLegal for medical use
VermontLegal
VirginiaLegal
WashingtonLegal
Washington, DCLegal
West VirginiaLegal for medical use
WisconsinIllegal
WyomingIllegal

In 2021, a total of 18 states have fully legalized cannabis, while another 26 have allowed marijuana usage for medicinal purposes in some capacity. Furthermore, the MORE Act—a bill to legalize marijuana federally—was reintroduced in the House of Representatives in May 2021.

If passed, the MORE Act (the Marijuana Opportunity Reinvestment and Expungement Act) would essentially remove cannabis from its classification as a Schedule I drug under the Controlled Substances Act. It would also work towards the expungement of criminals who were charged with crimes related to marijuana.

While the U.S. government has gone back and forth with cannabis legalization over the years, it appears that in the 21st century, the path only leads one way: towards federal legalization.

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