In this 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. On Feb. 6, 2019, the Pentagon confirmed it has moved some troops to Eagle Pass, Texas, to counter the threat posed by a new migrant caravan that's arrived on the U.S.-Mexico border. (AP Photo/Eric Gay, File) **FILE**
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