The family of slain ICE Agent Jaime Zapata is in search of answers about the death of their son. Perhaps the most important question is why Agent Zapata like all other U.S. agents who are helping the Mexican government south of the border, was unarmed. Cam Edwards speaks with Texas Congressman Blake Farenthold about the situation. Farenthold says requiring agents to be unarmed in Mexico goes against "common sense," and they are currently trying to find out where this policy came from in the first place. Originally aired 5/13/2011.