In this Feb. 22, 2013 photo, a sign and plastic flower mark 

In this Feb. 22, 2013 photo, a sign and plastic flower mark the Falfurrias, Texas grave for the unidentified remains of a suspected illegal immigrant discovered in South Texas. The death of migrants crossing the Southwest border has long been a tragic consequence of illegal immigration and, many say, the massive increase in U.S. border enforcement. For some, the tragedies are a powerful motivator in pushing Congress to act this year on a larger immigration reform package. (AP Photo/Eric Gay)
Associated Press
In this Feb. 22, 2013 photo, a sign and plastic flower mark the Falfurrias, Texas grave for the unidentified remains of a suspected illegal immigrant discovered in South Texas. The death of migrants crossing the Southwest border has long been a tragic consequence of illegal immigration and, many say, the massive increase in U.S. border enforcement. For some, the tragedies are a powerful motivator in pushing Congress to act this year on a larger immigration reform package. (AP Photo/Eric Gay)
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