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Associated PressAssociated PressApril 19, 201821min930

America's marijuana supporters have a lot to celebrate on this 420 holiday: Thirty states have legalized some form of medical marijuana, according to a national advocacy group. Nine of those states and Washington, D.C., also have broad legalization where adults 21 and older can use pot for any reason. Michigan could become the 10th state with its ballot initiative this year.