What about medical cannabis?

Since ancient times, marijuana has been used for medicinal and recreational purposes in many cultures. In the United States, it became illegal during prohibition, like alcohol. Later, under the Controlled Substances Act in the 1970s, the federal government classified marijuana a Schedule 1 drug. This classification includes heroin, LSD and ecstasy, all deemed to have no safe, effective medical use and a high potential for abuse.

This Schedule 1 status imposes bureaucratic and legal barriers, making it difficult to conduct scientific research on the medical benefits from marijuana. Studies that...