Texas House approves medical cannabis for veterans with PTSD, cancer patients Alongside other medical conditions Ted S. Warren/AP A photo of Shawn Kemp (40), a former NBA basketball player for the Seattle SuperSonics and several other teams, in action is displayed as an employee, left, talks with a customer at the grand opening of Shawn Kemp's Cannabis, the marijuana dispensary Kemp owns with several business partners, Friday, Oct. 30, 2020, in downtown Seattle. (AP Photo/Ted S. Warren) and last updated 2021-04-20 19:27:50-04 AUSTIN, TX â At the time of this publication, the recreational use of cannabis is legal in 17 different states. For medical cannabis, that number is 36 and it also includes the District of Columbia and four out of five U.S territories.