WASHINGTON, DC – MARCH 10: U.S. Sen. Cory Booker (D-NJ) (L) kneels near four-year-old Morgan Hintz, who suffers from a rare form of epilepsy, during a news conference on medical marijuana, on Capitol Hill, March 10, 2015 in Washington, DC. Her mother has been advocating the use of cannbidiol for her treatment. The news conference was held to announce a new medical marijuana bill before the U.S. Senate. (Photo by Mark Wilson/Getty Images)