The ability of U.S. Border Patrol to hold migrants has been a key concern as more migrants came to the border in the days leading up to the end of immigration restrictions linked to the pandemic, referred to as Title 42. The administration is facing a lawsuit aimed at curtailing its ability to release migrants from custody even when facilities are over capacity. At one point last week, more than 27,000 migrants were in custody along the border, a number that may top 45,000 by the end of May if the powers to more quickly release migrants from custody when facilities are over capacity are curtailed, said Matthew Hudak, deputy Border Patrol chief, in a court filing last week related to the lawsuit. Nunez-Neto said border officials had been encountering a little less than 5,000 people a day since Title 42 expired at midnight Thursday and new U.S. enforcement measures went into effect Friday.