A federal judge agreed Thursday to issue a new nationwide block against President Donald Trump’s executive order seeking to end birthright citizenship.

The ruling from US District Judge Joseph Laplante is significant because the Supreme Court last month curbed the power of lower court judges to issue nationwide injunctions, while keeping intact the ability of plaintiffs to seek a widespread block of the order through class action lawsuits, which is what happened Thursday in New Hampshire.

Ruling from the bench, Laplante granted a request from immigration rights attorneys to certify a nationwide class that “will be comprised only of those deprived of citizenship” and issued a preliminary injunction indefinitely blocking Trump’s Day One order from being enforced against any baby born after February 20.

“The preliminary injunction is just not a close call to the court,” Laplante said during a hearing. “The deprivation of US citizenship and an abrupt change of policy that was longstanding … that’s irreparable harm.”

US citizenship, the judge added, “is the greatest privilege that exists in the world.”