FILE - In this Oct. 16, 2013, file photo, marijuana clone plants that are used to grow medical marijuana are displayed under a light at a medical marijuana cooperative in Seattle. The American Medical Association agreed Monday, Nov. 16, 2015, to push for regulations requiring warnings be written on medical and recreational pot products and posted wherever they are sold, based on studies suggesting marijuana use may be linked with low birth weight, premature birth and behavior problems in young children. (AP Photo/Ted S. Warren, File)
FILE - In this Oct. 16, 2013, file photo, marijuana clone plants that are used to grow medical marijuana are displayed under a light at a medical marijuana cooperative in Seattle. The American Medical Association agreed Monday, Nov. 16, 2015, to push for regulations requiring warnings be written on medical and recreational pot products and posted wherever they are sold, based on studies suggesting marijuana use may be linked with low birth weight, premature birth and behavior problems in young children. (AP Photo/Ted S. Warren, File) Ted S. Warren AP
FILE - In this Oct. 16, 2013, file photo, marijuana clone plants that are used to grow medical marijuana are displayed under a light at a medical marijuana cooperative in Seattle. The American Medical Association agreed Monday, Nov. 16, 2015, to push for regulations requiring warnings be written on medical and recreational pot products and posted wherever they are sold, based on studies suggesting marijuana use may be linked with low birth weight, premature birth and behavior problems in young children. (AP Photo/Ted S. Warren, File) Ted S. Warren AP