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A father and son arrive at a Brownsville, Texas, bus station after they were allowed to cross from a migrant camp in Mexico into the United States on Feb. 25, 2021. They were among the first to officially cross into south Texas as part of the unwinding of the Trump administration's Migrant Protection Protocols, (MPP), also known as the 'Remain in Mexico' immigration policy. Under court order, that policy now is being reinstated. (Photo by John Moore/Getty Images)