420, 4:20, or 4/20 is cannabis culture slang for marijuana and hashish consumption, especially smoking around the time 4:20 p.m (16:20). It also refers to cannabis-oriented celebrations that take place annually on April 20. At locations in the United States where cannabis is legal, cannabis dispensaries will often offer discounts on their products on April 20.
In the United States, the non-medical use of cannabis is legalized in 19 states and decriminalized in 12 states as of May 2022. Decriminalization refers to a policy of reduced penalties for cannabis offenses, typically involving a civil penalty for possessing small amounts, instead of criminal prosecution or the threat of arrest. In jurisdictions without penalty the policy is referred to as legalization, although the term decriminalization is sometimes used for this purpose as well.
In the United States, increased restrictions and labeling of cannabis as a poison began in many states from 1906 onward, and outright prohibitions began in the 1920s. By the mid-1930s cannabis was regulated as a drug in every state, including 35 states that adopted the Uniform State Narcotic Drug Act. The first national regulation was the Marihuana Tax Act of 1937.
The use, sale, and possession of cannabis over 0.3% THC in the United States, despite laws in many states permitting it under various circumstances, is illegal under federal law. As a Schedule I drug under the federal Controlled Substances Act of 1970, cannabis over 0.3% THC is considered to have "no accepted medical use" and have a high potential for abuse and physical or psychological dependence. Cannabis use is illegal for any reason, with the exception of FDA-approved research programs. However, individual states have enacted legislation permitting exemptions for various uses, including medical, industrial, and recreational use.
In the United States, the use and possession of cannabis is illegal under federal law for any purpose by way of the Controlled Substances Act of 1970 (CSA). Under the CSA, cannabis is classified as a Schedule I substance, determined to have a high potential for abuse and no accepted medical use – thereby prohibiting even medical use of the drug. Despite this, most states have legalized either or both the medical and recreational use of cannabis.
Washington Initiative 502 (I-502) "on marijuana reform" was an initiative to the Washington State Legislature, which appeared on the November 2012 general ballot, passing by a margin of approximately 56 to 44 percent. Originally submitted to the Washington Secretary of State during the summer of 2011, enough signatures were collected and submitted by December to meet the required 241,153 signatures, sending it to the legislature. When the legislature adjourned without action in April, Initiative 502 automatically advanced to the November 2012 general ballot. It was approved by popular vote on November 6, and took effect over the course of a year, beginning with certification no later than December 6, 2012. Along with a similar Colorado measure, Initiative 502 was credited for encouraging voter turnout of 81%, the highest in the nation.
The legal history of cannabis in the United States began with state-level prohibition in the early 20th century, with the first major federal limitations occurring in 1937. Starting with Oregon in 1973, individual states began to liberalize cannabis laws through decriminalization. In 1996, California became the first state to legalize medical cannabis, sparking a trend that spread to a majority of states by 2016. In 2012, Washington and Colorado became the first states to legalize cannabis for recreational use.
Alaska Measure 2 was a successful 2014 ballot measure in the U.S. state of Alaska, described as "An Act to tax and regulate the production, sale, and use of marijuana." The measure went into effect on 24 February 2015, allowing Alaskans age 21 and older to possess up to an ounce of cannabis and six plants, making Alaska the third state to legalize recreational marijuana, following Colorado and Washington. Oregon and Alaska both voted in legalization on Election Day 2014, but Alaska preceded Oregon in enacting their legislation.
Cannabis on American Indian reservations historically largely fell under the same regulations as cannabis nationwide in the United States. However, the August 2013 issuance of the Cole Memorandum opened discussion on tribal sovereignty as pertains to cannabis legalization, which was further explored as the states of Washington and Colorado legalized marijuana. A clarifying memo in December 2014 stated that the federal government's non-interference policies that applied to the 50 states, would also apply to the 326 recognized American Indian reservations. U.S. Attorney for Oregon, Amanda Marshall, stated that the clarification had been issued in response to legal questions from tribal nations, but that only three unnamed tribes, in California, Washington state, and "the Midwest" had stated explicit interest in legalizing.
Cannabis in Vermont as of May 2004 is legal for medical use, and legal for recreational use as of July 1, 2018.
With the adoption of their historic citizen votes in the 2014 general election, cannabis tourism in the United States, a form of drug tourism, exists in Colorado and Washington state.
Cannabis in Wisconsin is illegal for recreational use. Possession of any amount is punishable by up to 6 months in prison and a $1000 fine for a first offense. A second offense is punished as a felony with up to 3.5 years in prison and up to a $10,000 fine. However, several municipalities and counties in Wisconsin have decriminalized or lessened penalties for minor possession offenses. Medical use is legal only in the form of low-THC cannabis oil.
Cannabis in Virginia is legal for medical use and recreational use. The first medical marijuana dispensary opened in August 2020, and adult recreational use became legalized in July 2021.
Cannabis in Illinois is legal for both medical and recreational use. Illinois became the eleventh state in the US to legalize recreational marijuana effective January 1, 2020.
Cannabis in New Mexico is legal for recreational use as of June 29, 2021. A bill to legalize recreational use – House Bill 2, the Cannabis Regulation Act – was signed by Governor Michelle Lujan Grisham on April 12, 2021. The first licensed sales of recreational cannabis began on April 1, 2022.
Cannabis in New Jersey is legal for both medical use and recreational use. An amendment to the state constitution legalizing cannabis became effective on January 1, 2021, and enabling legislation and related bills were signed into law by governor Phil Murphy on February 22, 2021.
Cannabis in Maryland is legal for medical use and illegal for recreational use, but possession of 10 grams or less is decriminalized. In 2013, a state law was enacted to establish a state-regulated medical cannabis program. The program, known as the Natalie M. LaPrade Maryland Medical Cannabis Commission (MMCC) became operational on December 1, 2017.
Cannabis in Washington relates to a number of legislative, legal, and cultural events surrounding the use of cannabis. On December 6, 2012, Washington became the first U.S. state to legalize recreational use of marijuana and the first to allow recreational marijuana sales. The state had previously legalized medical marijuana in 1998. Under state law, cannabis is legal for medical purposes and for any purpose by adults over 21.
The Congressional Cannabis Caucus is a registered caucus in the United States Congress, formed in 2017 during the 115th session. The bipartisan caucus was founded by Republicans Dana Rohrabacher and Don Young and Democrats Earl Blumenauer and Jared Polis. The Congressional Cannabis Caucus seeks to harmonize federal laws that conflict with various state laws that permit medical and recreational cannabis.
The Cannabis Act is a law which legalized recreational cannabis use in Canada in combination with its companion legislation Bill C-46, An Act to Amend the Criminal Code. The law is a milestone in the legal history of cannabis in Canada, alongside the 1923 prohibition.
