A few states allow Dr.'s to prescribe heroin yet, you can not go to any state with your script and expect to be legal to use it...except the state which has legislated it under the practice of medicine. If, the majority of states legislated it's medicinal use, it would be rescheduled federally...not likely to happen but, is a good analogy analysis to use. As we have 15 states mmj and growing fast.