By Terry Frieden CNN Justice Producer WASHINGTON (CNN) – The Justice Department has provided federal prosecutors "clarification and guidance" urging them to go after drug traffickers, but not patients and caregivers, in the 14 states that have medical marijuana laws. [cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/POLITICS/10/19/medical.marijuana/art.med.marijuana.afp.gi.jpg caption="Signs beckon patients into a medical marijuana clinic in Los Angeles, California."] … Continue reading U.S. attorneys told to go after pot traffickers, not patients