In this Sept. 5, 2014, file photo, a U.S. Customs and Border Protection Air and Marine agent looks for signs along trail while on patrol near the Texas-Mexico border near McAllen, Texas. (AP Photo/Eric Gay, File)
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In this Sept. 5, 2014, file photo, a U.S. Customs and Border Protection Air and Marine agent looks for signs along trail while on patrol near the Texas-Mexico border near McAllen, Texas. (AP Photo/Eric Gay, File)
