The visit to a facility in Carrizo Springs, Texas, comes as the Biden administration faces a growing humanitarian and political challenge at the U.S.-Mexico border that threatens to overshadow its ambitious legislative agenda.

By Jonathan Lemire, Nomaan Merchant, Josh Boak, Associated Press

First lady Melania Trump made an unannounced visit to a Texas facility Thursday to get a first-hand look at some of the migrant children sent there by the U.S. government after their families entered the country illegally.

By Darlene Superville, Associated Press