Solicitor General John Sauer urged the Supreme Court to allow the deportation of alleged Venezuelan gang members the justices temporarily blocked.

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.

Justices Clarence Thomas and Samuel A. Alito Jr. dissented. A group of migrants had been scheduled to be flown out of the country, according to people familiar with the matter.