Arizona Daily Star:  “A new memo from a top Justice Department official could undermine the chances of ever setting up a system of medical-marijuana growers and dispensaries in Arizona. . . . [The Department of] Justice has noticed several states have enacted laws to allow ‘multiple large-scale, privately-operated industrial marijuana cultivation centers,’ some of which could have revenues of millions of dollars a year.  ‘The (earlier) memo was never intended to shield such activities from federal enforcement action and prosecution, even where those activities purport to comply with state law,’ Cole wrote. He said anyone in the business of cultivating, selling or distributing marijuana is violating the federal Controlled Substances Act, ‘regardless of state law.’  That also applies to those ‘who knowingly facilitate such activities,’ he said.”