Try growing a few acres of tobacco and sell it without a federal tobacco allotment. Its a plant. and its *quite* regulated.the only reason why i think marijuana is really illegal is because anyone can grow it and sell it...and theres no way for the government to keep track of this...there fore the government cant charge us taxes for growing it.. they make no profit!! soo what to they do.. MAKE IT ILLEGAL ... but why isn't medical marijuana illegal? because the government gets a portion of the sale.. aka tax of the sale..