File - In this Aug. 8, 2007 file photo, a boy waits for the last car to unload from the hand drawn ferry that runs between the U.S. and Mexico border at Los Ebanos, Texas. If Congress agrees on a ... more 
File - In this Aug. 8, 2007 file photo, a boy waits for the last car to unload from the hand drawn ferry that runs between the U.S. and Mexico border at Los Ebanos, Texas. If Congress agrees on a comprehensive immigration reform bill, it will probably include a requirement to erect fencing that would wrap more of the nation's nearly 2,000-mile Southwest border in tall steel columns. But the mandate would essentially double down on a strategy that the Customs and Border Protection agency isn't even sure works. (AP Photo/LM Otero, File) less 
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Associated Press | Photo By LM Otero, File
Mon, Aug 12, 2013 2:35 PM EDT