Constitutional scholars caution that the justices’ brief order does not address major underlying questions about the legal authorities Trump is using.

Many of the Venezuelan immigrants who have been removed under the Alien Enemies Act have been sent to a prison in El Salvador known as the Centro de Confinamiento del Terrorismo, or CECOT. Grove said it is unclear whether that was the plan for the folks represented in this case, too.

Attorneys for Venezuelan migrants who fear they will be deported to a Salvadoran prison have asked the Supreme Court to review the legality of the move, arguing the Trump administration has not complied with an earlier order requiring they be given adequate time to contest their deportation.