CNN Weed 2 Cannabis Madness Dr. Sanjay Gupta April 25, 2015 03:38:00
Investigation. why so much more stringent in the united states? >> i think there is a greater level of rigor at all levels of regulatory inquiry in the u.s. >> like any drug in the united states, cannabis would have to go through rigorous testing, research and approval by the fda. but after that, things start to get tricky. marijuana also needs the approval of other government agencies like the national institutes of health and the drug enforcement administration. this is, of course, difficult, if not possible. why? because in the united states, marijuana is illegal and classified by the gover...