This is part 2 of an ongoing Pulitzer-Prize winning series. Click here for the earlier parts in the series, or to discuss the series as a whole.

The White House laid out a host of new initiatives to investigate child labor violations among employers and improve the basic support that migrant children receive when they are released to sponsors in the United States. Karine Jean-Pierre, the White House press secretary, called the revelations in The Times “heartbreaking” and “completely unacceptable.”