In a somewhat surprising, but welcome development, the American Medical Association has officially adopted a policy which calls for a review of marijuana’s status as a Schedule 1 drug (along with LSC, PCP, and heroin), aka a drug with no known medicinal purpose.

“This shift, coming from what has historically been America’s most cautious and conservative major medical organization, is historic,” said Aaron Houston, director of government relations for the Marijuana Policy Project, who attended the AMA meeting. “Marijuana’s Schedule I status is not just scientifically untenable, given the wealth of recent data showing it to be both safe and effective for chronic pain and other conditions, but it’s been a major obstacle to needed research.”