On drugs patrol at US-Mexico border
30 July 2013 Last updated at 07:08 BST
Forty years after the creation of the US Drug Enforcement Agency, leaders in Latin American are calling for a new strategy for the war on drugs.
The agency was set up to curb the flow of drugs across the border, into the United States.
But those south of the border in Mexico have paid a heavy price for its drug industry.
Leana Hosea reports from the Mexico-US border.