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 ruling comes after the Trump administration had notified migrants in the Bluebonnet Detention Center in Texas of its use of the Alien Enemies Act.

In the 36 days since President Trump invoked a powerful wartime law to deport Venezuelan migrants accused of gang membership, a complex and high-risk legal battle has played out in the federal courts.