Three states - Oregon, Washington and Colorado - are voting on whether to legalise the sale and recreational use of marijuana.
Seventeen states, plus the District of Colombia, currently allow the sale and use of marijuana, but only for medicinal use. The plans would see marijuana regulated in a similar way to cigarettes and alcohol, and would allow it to be sold to anyone 21 or over.
Proponents say it would generate millions of dollars in revenue for the state government, and free up courts and prisons for more serious offenders.
Burn a J - http://www.bbc.co.uk/news/magazine-20143047 (http://www.bbc.co.uk/news/magazine-20143047)
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Fuckin' a! 8)