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

The government of El Salvador acknowledged to United Nations investigators that the Trump administration maintains control of the men who were deported from the U.S. to a Salvadoran prison, contradicting public statements by officials in both countries.

The U.S. has exclusive jurisdiction and responsibility over migrants Trump sent to prison in El Salvador, according to filings at the United Nations