In this April 19, 2011 photo, a U.S. Border Patrol vehicle patrols along the Anzaldua's International Bridge south of Mission, Texas. The National Guard troops have augmented the Border Patrol's ... more 
In this April 19, 2011 photo, a U.S. Border Patrol vehicle patrols along the Anzaldua's International Bridge south of Mission, Texas. The National Guard troops have augmented the Border Patrol's 21,000 agents by almost 6 percent since July, 2010. The troops serve as lookouts but are not directly involved in actual law enforcement activities. They are credited with helping arrest 17,000 illegal immigrants, almost 6 percent of those caught, according to Customs and Border Protection. less 
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Associated Press | Photo By Delcia Lopez
Wed, Jun 1, 2011 4:44 PM EDT