Psilocybe cubensis Mushrooms in the United States
In the United States, psilocybin mushrooms along with most other psychoactive substances are illegal under federal law. However, in 2019, the city of Denver, Colorado was the first to decriminalize magic mushrooms. Pursuing criminal charges for the possession and cultivation of psilocybin mushrooms for personal use has become the lowest priority for Denver police, although the distribution of psilocybin is still not allowed.
Soon after Denver’s announcement, the cities of Oakland and Santa Cruz in California voted to decriminalize all entheogens, including psilocybin. Since then, Ann Arbor, Michigan, and Washington DC have passed laws decriminalizing most psychedelic substances.
In November 2020, Oregon voted yes on an initiative that legalizes psilocybin therapy (this initiative is currently in a two-year development phase). Numerous other states and cities are currently considering measures to decriminalize or legalize mushrooms and other psychedelics.
EDIT: As of September 26, 2022, there have been several other cities that have decriminalized psychedelics. These include San Francisco, Seattle and Port Townsend in Washington; Detroit, Michigan; Easthampton, Northampton, Cambridge, and Somerville in Massachusetts.