Marijuana Justice Act
Senator Cory Booker (D-NJ) has introduced the Marijuana Justice Act, S. 1689, which would remove marijuana from the list of Schedule 1 controlled substances and penalize states which incarcerate minorities for marijuana infractions at a rate higher than their proportion of the population.
Contact your Senators and ask them to co-sponsor S. 1689, the Marijuana Justice Act.
Some of the medical uses for marijuana:
From: Business Insider, 4/20/16