In this Dec. 11, 2012 file photo, Jack Riley, head of the Drug Enforcement Administration in Chicago, points out local Mexican drug cartel problem areas on a map in the new interagency Strike Force ... more 
In this Dec. 11, 2012 file photo, Jack Riley, head of the Drug Enforcement Administration in Chicago, points out local Mexican drug cartel problem areas on a map in the new interagency Strike Force office in Chicago. Looking on is DEA agent Vince Balbo. The ruthless syndicates have long been the nation’s No. 1 supplier of illegal drugs, but in the past, their operatives rarely ventured beyond the border. A wide-ranging Associated Press review of federal court cases and government drug-enforcement data, plus interviews with many top law enforcement officials, indicate the groups have begun deploying agents from their inner circles to the U.S. (AP Photo/M. Spencer Green, File) less 
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Associated Press | Photo By M. Spencer Green, File
Mon, Apr 1, 2013 4:21 AM EDT