Technically, you can be arrested and charged with federal possession of a schedule one drug if you have any amount of marijuana in any state, including those st

Technically, you can be arrested and charged with federal possession of a schedule one drug if you have any amount of marijuana in any state, including those states which have made it legal under state law. That's potentially a year in the federal pen. State legalization of marijuana just means you can't be prosecuted under state law.