The Texas border city of El Paso is grappling with a mounting humanitarian crisis as a Trump-era policy hangs in the balance, leaving many migrants unsheltered in the cold night.
Title 42 gives the government the power to automatically expel undocumented migrants.
It has blocked thousands of people from crossing the US-Mexico frontier.
The policy was due to expire on 21 December, but has won a temporary reprieve from the Supreme Court.
On Monday Chief Justice John Roberts temporarily blocked its termination pending a ruling on an emergency appeal from some Republican-led states who have asked for the policy to remain in place.
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