actually even hemp is illegal in the good ole us of a.. this is pretty much due to WR Hearst back in the 30s.. he was a super publicist and had a shit ton of acres of trees, and when hemp gained popularity, he was set to lose millions of dollars back then, so probably more like billions in today's economy..
so what did he do?? he went on the rampage and released and pushed films like reefer madness, and also printed tons of bs stories in his many papers, and pretty much single handedly made hemp and mj illegal..