Kilmar Abrego Garcia, whose mistaken deportation to El Salvador became a political flashpoint in the Trump administration’s stepped-up immigration enforcement, was returned to the U.S. to face criminal charges.

Kilmar Abrego Garcia’s case started quietly, boiling down to a clerical error that moved him up on a list to land on a deportation flight destined to El Salvador in March. And then a court filing from the Trump Justice Department acknowledging the mistake brought it to the national forefront – culminating in a fraught legal battle and heated political debate.