Less than two weeks after the Supreme Court allowed President Donald Trump to use a controversial 18th century wartime authority to speed deportations, the issue has rocketed back to the justices in a second short-fuse appeal with enormous potential consequences.

The early-morning order temporarily blocks the administration’s attempt to use the Alien Enemies Act to remove a group of Venezuelan migrants.

The Supreme Court blocked the Trump administration from deporting a second wave of Venezuelan immigrants under the Alien Enemies Act after lawyers rushed to the court and alleged that the administration was about to send dozens or hundreds of detainees to El Salvador in defiance of an earlier ruling by the justices.