The case raises questions about the Trump administration's adherence to limits set by the Supreme Court. It carries the risk of a significant clash between the two coequal branches of government and potentially a full-blown constitutional crisis.

In an overnight ruling blocking the Trump administration from deporting a group of Venezuelans, the justices ignored some of their protocols.

The Supreme Court early Saturday morning paused the deportation of immigrants potentially subject to the Alien Enemies Act, freezing action in a fast-developing case involving a group of immigrants in Texas who say the Trump administration was working to remove them.