The case on the Supreme Court's docket this week ostensibly deals with a challenge to the Trump administration's efforts to narrow the definition of birthright citizenship. But overriding that important constitutional debate is a more immediate and potentially far-reaching test of judicial power: the ability of individual federal judges to issue universal or nationwide injunctions,

The Supreme Court could give a major boost to the Trump administration's muscular use of executive power when it hears arguments Thursday over his plan to end birthright citizenship.

As the Supreme Court hears arguments Thursday on a major Donald Trump policy for the first time in his second term, the president could secure a significant win affecting many of the lawsuits against his administration out of a case that is otherwise widely seen as a legal loser.