Marijuana is still illegal because the governement cannot control the growth, sales and distrobution of the product. Therefore they cannot tax it to get their cut which they believe they are entitled to.
It is that simple and has nothing to do with health issues, it is about Uncle Sam and all the other governments that say it is bad getting their cut or not getting their cut in this case.

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AJ, my 80's weed dealer said "When you gotta get high, you gotta get high"
My avatar was taken in front of Cousin Strawberry's house from the movie Up in Smoke.