In this photograph taken Saturday, April 25, 2015, an employee loads packets with medicinal marijuana for sale as a contingent of lawmakers, their staffers and a handful of lobbyists toured one of two retail and grow operations for both medical and recreational marijuana in northeast Denver. Colorado's unusual tax law is forcing the state to suspend taxes on recreational marijuana for one day, Sept. 16, during which a 10 percent sales tax and a 15 percent excise tax will not be collected. (AP Photo/David Zalubowski)