The administration has struggled to house young migrants at Customs and Border Protection facilities like this one in Donna, Texas.

The administration has struggled to house young migrants at Customs and Border Protection facilities like this one in Donna, Texas.

The number of migrants encountered at the U.S.-Mexico border in March was the most in at least 15 years, as agents for U.S.

Customs and Border Protection apprehended nearly 172,000 people, according to Biden administration officials.