After the U.S. Supreme Court this week ruled that restrictions known as Title 42 could stay in place temporarily, many migrants are facing a Christmas weekend of what Mexico's weather service called a "mass of arctic air." said Walmix Juin, a 32-year-old Haitian migrant preparing for the weekend in a flimsy tent in the city of Reynosa, across the border from McAllen, Texas. Title 42 allows the United States to return migrants to Mexico or certain countries without a chance to request asylum. Without clarity on when it will finish, some officials worry their cities could be overwhelmed if more migrants turn up. "U.S. migration policy has a big impact here on the border," Reynosa Mayor Carlos Pena Ortiz said on Friday.

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