Hundreds of mostly Venezuelan alleged gang members were deported from the United States to a prison in El Salvador on Sunday, with the Trump administration invoking wartime powers to speed up removals despite a court ruling halting the move.

The Trump administration has deported hundreds of Venezuelan migrants from the United States to El Salvador whom it alleges are gang members despite a court order preventing their expulsion.

The White House is denying that it violated a judge’s order Saturday to halt the deportations of Venezuelan gang members to El Salvador, which, if it did occur, would take legal showdowns over the administration’s claims of vast presidential power closer to the edge of a constitutional crisis.

The Trump administration says it did not defy a weekend court order to halt the use of wartime powers to fast-track deportations of alleged Venezuelan gang members to El Salvador. They’re also trying to push the judge who issued the ruling off the case.