<P> Cannabis in Colorado refers to cannabis (legal term marijuana) use and possession in Colorado, United States . The Colorado Amendment 64, which was passed by voters on November 6, 2012, led to legalization in January 2014 . The policy has led to cannabis tourism . There are two sets of policies in Colorado relating to cannabis use: those for medicinal cannabis and for recreational drug use along with a third set of rules governing hemp . </P> <P> Amidst an early 20th century trend of limiting the drug, Colorado first restricted cannabis on March 30, 1917 . In November 1914 Colorado voters approved the 22nd Amendment to the Colorado Constitution, also known as the Prohibition Amendment, prohibiting alcohol beginning January 1, 1916; and on December 18, 1917 the Eighteenth Amendment (establishing Prohibition) was proposed by Congress . </P>

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