Gary Diehl shops for cannabis at Medithrive during the store's first day of recreational marijuana sales on Saturday, Jan. 6, 2018, in San Francisco. An announcement that the Department of Justice would no longer adopt a "hands-off" approach to legalized marijuana use sent some in the industry into a tailspin just days after the $7 billion California recreational weed market opened for business. (AP Photo/Noah Berger)
