The Supreme Court mulled whether judges should be allowed to extend injunctive relief to the entire country in a lively argument Thursday stemming from President Trump’s efforts to narrow birthright citizenship.

The practice of issuing nationwide — or “universal” — injunctions drew both criticism and staunch defense from the justices, as the argument bled into the actual constitutionality of Trump’s order and whether the administration would abide by court precedents.

Here are five takeaways from the argument:

Conservatives question need for universal injunctions

Several of the Supreme Court’s conservatives lamented the recent rise in nationwide injunctions, noting they didn’t exist near the founding and have largely been used against modern presidential administrations.

Justice Clare

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