Via CBS News:

El Paso, Texas — The Biden administration has finalized a sweeping restriction on asylum that it plans to use to ramp up swift deportations of migrants who cross the U.S.-Mexico border after the Title 42 pandemic-era emergency policy sunsets on Thursday, according to internal documents obtained by CBS News.

Hundreds of U.S. asylum officers were trained on how to enforce the restriction on Tuesday and the regulation was published on Wednesday, less than 48 hours before Title 42 is set to expire. CBS News first reported the regulation's finalization on Tuesday, as well as the guidance issued to asylum officers charged with implementing it.

The regulation, which is expected to be challenged in federal court, will be a dramatic shift in asylum policy, disqualifying migrants from U.S. protection if they fail to request refugee status in another country, such as Mexico, on their journey to the southern border.