Phoenix New Times:  Attorney General Jeff Sessions is rescinding the federal policies that kept prosecutors from interfering with legal marijuana in states across the U.S. Now, those prosecutors can use their discretion to enforce federal marijuana law, even in states where pot is legal for recreational or medical purposes — like Arizona.  In a release, the Justice Department called the move “a return to the rule of law” that allows federal prosecutors to take local control of how they go after drug offenses.”