New Hampshire-based Judge Joseph Laplante ruled during a hearing Thursday to block Trump’s executive order, which broadly bars children born in the U.S. from getting citizenship if their parents are not U.S. citizens or permanent residents.

The policy was slated to take effect July 27 after the Supreme Court invalidated the previous court orders pausing it, with justices ruling last month lower federal judges cannot issue sweeping orders that block policies nationwide.

The Supreme Court did specify several carveouts that parties can use to still get policies blocked, however, such as bringing cases as class-action lawsuits that prohibit the Trump administration from enforcing a policy against a specific group—which is what plaintiffs in the birthright citizenship case did.

Laplante certified the case as a class action lawsuit, meaning the Trump administration cannot enforce the executive order against any child born in the U.S. who would be subject to the new policy, which has the same effect as barring the policy nationwide.

The judge said Thursday issuing the order blocking the policy was “not a close call,” Reuters reports, saying the fact that children could be denied citizenship if the policy takes effect constituted “irreparable harm” because citizenship “is the greatest privilege that exists in the world.”