At a hearing discussing the controversy surrounding Operation Fast & Furious, which allowed numerous firearms to be transferred to operatives for Mexican drug cartels, the attorney general got some questions on another drug war problem: the crackdown on medical marijuana. Congressman Jared Polis (D-CO) asked Attorney General Holder if the Department of Justice intended to leave medical marijuana states alone as was promised in the Ogden Memo in 2009, as well as whether the recent crackdown in California…