A Border Patrol vehicle patrols the fence separating the cities of Nogales, Ariz., and Nogales, Sonora. The fence has been rebuilt twice.
A U.S. Border patrol agent was shot to death early this morning while patrolling on horseback in Naco, Arizona. A second agent also suffered gunshot wounds and was air-lifted to a hospital for surgery. The two agents were investigating a tripped sensor along the US Mexican border.
Officials haven't said what led to the gunfire, but this is a stretch of border known for both human and drug trafficking. In 2010 another agent was killed nearby, Brian Terry. His death was later linked to the Fast and Furious gun smuggling operation.
Andrew Selee Director of the Mexico Institute at the Wilson Center in Washington, D.C. joins the show to discuss the incident.