Judge in San Francisco lets biggest medical pot shop stay open

To match Special Report MARIJUANA/CALIFORNIASAN FRANCISCO (Reuters) – A federal magistrate judge on Monday ruled that a medical-marijuana dispensary that bills itself as the world's largest can continue to operate, at least for now, in Oakland and San Jose despite a bid by federal prosecutors to shut it down. The ruling marks the latest move in a tug-of-war between local and federal authorities over medical marijuana dispensaries and over Harborside Health Center, which was featured on the Discovery Channel reality TV show "Weed Wars. …