On May 16, 2014, Tennessee Governor Bill Haslam signed SB 2531 into law. The bill allows the use of cannabis oil containing cannabidiol (CBD) that has less than 0.9% THC “as part of a clinical research study on the treatment of intractable seizures when supervised by a physician practicing at… a university having a college or school of medicine.” The study is authorized for four years. On May 5, 2015, Governor Haslam signed SB 280 into law. The bill allows the use of CBD oil that is less than 0.9% THC and that is “obtained legally in the United States and outside of” Tennessee. The bill went into effect immediately.