MEXICO MEETING U.S. Defense Secretary Robert M. Gates, Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Secretary of State Hillary Clinton meet in Mexico City, March 23, 2010. The three U.S. officials attended the Merida U.S.-Mexico High Level Consultative Group meeting which focused on helping the Mexican government fight drug-trafficking cartels and other security threats. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 832580-T-YBU26-583.jpg Photo Gallery