The request from U.S. District Judge Stephanie Gallagher comes after the government of El Salvador, in a report by the United Nations submitted in a separate lawsuit, said that the migrants sent by the U.S. to CECOT are under the authority of the United States.

In response to UN inquiries, Salvadoran authorities denied past US claims and stated that they have only facilitated the use of their infrastructure

The Trump admin has argued that the men are now outside U.S. legal jurisdiction and no longer protected by constitutional rights.