The prohibition of drugs through sumptuary legislation or religious law is a common means of attempting to prevent the recreational use of certain intoxicating substances.
The legality of cannabis for medical and recreational use varies by country, in terms of its possession, distribution, and cultivation, and how it can be consumed and what medical conditions it can be used for. These policies in most countries are regulated by three United Nations treaties: the 1961 Single Convention on Narcotic Drugs, the 1971 Convention on Psychotropic Substances, and the 1988 Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances. Cannabis was reclassified in 2020 to a Schedule I-only drug under the Single Convention treaty, with the schedules from strictest to least being IV, I, II, and III. As a Schedule I drug under the treaty, countries can allow the medical use of cannabis but it is considered to be an addictive drug with a serious risk of abuse.
Decriminalization or decriminalisation is the legislative process which removes prosecutions against an action so that the action remains illegal but has no criminal penalties or at most some civil fine. This reform is sometimes applied retroactively but otherwise comes into force from either the enactment of the law or from a specified date. In some cases regulated permits or fines may still apply, and associated aspects of the original criminalized act may remain or become specifically classified as crimes. The term was coined by anthropologist Jennifer James to express sex workers' movements' "goals of removing laws used to target prostitutes", although it is now commonly applied to drug policies. The reverse process is criminalization.
In the United States, the non-medical use of cannabis is legalized in 24 states and decriminalized in 7 states, as of November 2023. 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.
Drug liberalization is a drug policy process of decriminalizing, legalizing, or repealing laws that prohibit the production, possession, sale, or use of prohibited drugs. Variations of drug liberalization include drug legalization, drug relegalization, and drug decriminalization. Proponents of drug liberalization may favor a regulatory regime for the production, marketing, and distribution of some or all currently illegal drugs in a manner analogous to that for alcohol, caffeine and tobacco.
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.
Cannabis is legal in Uruguay, and is one of the most widely used drugs in the nation.
Cannabis in Paraguay is illegal, but the nation is one of the world's largest producers of cannabis; possession of 10 grams or less was decriminalized in 1988. It is the second-largest cannabis producer in Latin America, following Mexico. Paraguay is the main source of cannabis for Brazil, Argentina, Uruguay, and Chile, and produced 5900 metric tons per year per a 2008 report.
Minors and the legality of cannabis is one of the issues around the legalisation of cannabis, with most jurisdictions placing strict age limits in a similar way as is done with the drinking age for alcohol.
The use of cannabis as a recreational drug has been outlawed in many countries for several decades. As a result of long-fought legalization efforts, several countries such as Uruguay and Canada, as well as several states in the US, have legalized the production, sale, possession, and recreational and/or medical usage of cannabis. The broad legalization of cannabis in this fashion can have numerous effects on the economy and society in which it is legalized.
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 Colombia is fully legal for medicinal purposes and for industrial purposes.
The use of cannabis in Belize is common and largely tolerated; however, possession can result in fines or imprisonment. Possession or use of 10 grams or less on private premises was decriminalized in November 2017.
Cannabis in Mexico is legal for both recreational and medicinal purposes. It became legal for recreational purposes in June 2021, upon application and issuance of a permit from the health secretariat, COFEPRIS. On 29 June 2021, the Supreme Court of Mexico decriminalized the recreational use of cannabis. President Andrés Manuel López Obrador signed a bill that allows adults 18 and over to possess up to 28 grams of cannabis and grow up to six marijuana plants on their property.
Cannabis in Peru is not legal for recreational use, possession for own consumption is also decriminalized by the Criminal Code and medical cannabis was legalized in 2017.
The list includes and details significant events that occurred in the global history of national-level implementations of, or changes made to, laws surrounding the use, sale, or production of the psychoactive drug cannabis.
Cannabis in Georgia is legal in terms of its possession and consumption due to a ruling by the Constitutional Court of Georgia on 30 July 2018. This makes Georgia one of the first countries in the world to legalize cannabis for both recreational and medical use, and the only former-communist state in the world to do so.
The Cannabis Act (C-45) of June, 2018 paved the way for the legalization of cannabis in Canada on 17 October 2018. Police and prosecution services in all Canadian jurisdictions are currently capable of pursuing criminal charges for cannabis marketing without a licence issued by Health Canada. The Supreme Court of Canada has held that the federal Parliament has the power to criminalize the possession of cannabis and that doing so does not infringe upon the Canadian Charter of Rights and Freedoms. The Ontario Court of Appeal and the Superior Court of Ontario have, however, held that the absence of a statutory provision for medical marijuana is unconstitutional, and to that extent the federal law is of no force and/or effect if a prescription is obtained. The recreational use of cannabis has been legalized by the federal government, and took effect on 17 October 2018.
RE 635.659 was a case of the Supreme Court of Brazil concerning the decriminalization of drugs for personal use. The case's rapporteur, Gilmar Mendes, cast the initial vote in favor of decriminalization, and the majority of the Court agreed to decriminalize cannabis.
