FILE - In this June 14, 2012 file photo, then presidential candidate Enrique Pena Nieto, right, of the Institutional Revolutionary Party, greets retired Colombian Gen. Oscar Naranjo during a press ... more 
FILE - In this June 14, 2012 file photo, then presidential candidate Enrique Pena Nieto, right, of the Institutional Revolutionary Party, greets retired Colombian Gen. Oscar Naranjo during a press conference in Mexico City. Naranjo, who was named top security advisor by President-elect Pena Nieto, said Friday, July 6, 2012, that he is recommending the creation of elite units of police and troops who will target not just major drug traffickers but also lower-level cartel hitmen as a way of swiftly reducing violence. (AP Photo/Christian Palma, File) less 
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Associated Press | Photo By Christian Palma, File
Fri, Jul 6, 2012 9:33 PM EDT