Customs and Border Protection, the agency that oversees the land crossings, said it’s seen a “resurgence” of migrants riding freight trains through Mexico, which sparked the move.
DHS suspends freight train operations at two border crossings due to migrant surge
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Mark Morgan, who served in the Trump administration as head of Customs and Border Protection, a major agency within Homeland Security, said the secretary is likely on firm legal ground.
Non-Labor Day: 'Santa' Mayorkas grants another day's leave to DHS employees
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