Throngs of people wait to purchase marijuana and products containing THC at Rise Dispensaries in Mundelein, Illinois, on Wednesday. Jan. 1 was the first day for recreational marijuana to be sold legally in the state. Under Illinois law, anyone over 21 with a valid state ID or driver's license can purchase recreational marijuana from licensed retailers. The store is about an hour south of Milwaukee. The store opened at 6 a.m. and buyers had a three-hour wait.