FILE - In this Friday, Nov. 16, 2018, file photo, members of the U.S. military install multiple tiers of concertina wire along the banks of the Rio Grande near the Juarez-Lincoln Bridge at the U.S.-Mexico border, in Laredo, Texas. The Pentagon said Sunday, Feb. 3, 2019, it will send 3,750 more troops to the U.S.-Mexico border to put up another 150 miles of concertina wire and provide other support for Customs and Border Protection. (AP Photo/Eric Gay, File)
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