The Supreme Court on Friday limited the use of nationwide injunctions, reining in federal judges' ability to issue sweeping orders that have in recent years stymied implementation of policies from Republican and Democratic presidential administrations alike.

The ruling left unsettled the question of whether children born to immigrants without full legal status in the United States are entitled to automatic citizenship. So what happens now?

But for the remaining 28 states that have not sued, Trump's attempts to end birthright citizenship could go into effect in as soon as 30 days. Challengers can and will also fight