By using John Shiffman and Kristina Cooke WASHINGTON (Reuters) – A secretive U.S. Drug Enforcement Administration unit is funneling information from intelligence intercepts, wiretaps, informants and an incredible database of telephone records to authorities across the nation to lend a hand them launch legal investigations of American citizens. Although these instances hardly contain national security issues, documents reviewed through Reuters exhibit that regulation enforcement dealers had been directed to conceal how such investigations really start – not best from defense lawyers but additionally from time to time from prosecutors and judges. …