A U.S. judge dismissed on Thursday a federal criminal case accusing a noncitizen of voting in an election, finding that the statute criminalizing noncitizen voting was unconstitutional.

The ruling by Miami-based U.S. District Judge David Leibowitz only applies to the case of Chelsea Cox, a Jamaican national living in Florida who was charged in October with illegally voting in the 2020 election.

But it appears to mark the first time a federal court has found the 1996 law a violation of the U.S. Constitution, dealing a blow to the Trump administration’s crackdown on noncitizen voting.

That crackdown has become a cornerstone of the Republican president’s efforts to highlight alleged election fraud ahead of November’s midterm elections.

(Reporting by Tom Hals, Editing by Franklin Paul)