I am actually presenting on this in class:
As part of my presentation, I'll be talking about how the FDA has denied the scientific evidence for the efficacy of marijuana for medical purposes... but at the same time the FDA has approved Marinol, which is delta-9 THC but not plant-derived, for distribution; and the FDA has approved Sativex, which is a mix of plant-derived cannabinoids, for Phase III trials!
So, there's evidence enough to support cannabinoids' safety and efficacy for medical purposes to sell pot to us as a prescription drug, at a premium price, but obviously not enough evidence to lower the Schedule of the whole plant product. Uh-huh.
I'll finish up with a word from our President: