Disclaimer : Non-user
As soon as you start talking legalization, one of the first questions to come up is - "where do we draw the line?"
Do me make pot legal, but keep coke illegal? Etc.
I have a simple solution to this problem, one that would be clear to anyone trying to make a distinction about any given new drug.
Processing is illegal. If you can pick it, you can do what you want it with. If you have to make it, you can't.
Poppies? Legal. Opium, illegal.
Pot? Legal.
Mushrooms? Legal.
Katt (or however you spell it. Africian stimulant)? Legal.
Crystal Meth? Illegal.
I have a lot of trouble with a system that makes a "weed" which can grow wildly almost anywhere in the US illegal.