The ruling bars U.S. agencies from implementing the order to end birthright citizenship for children born to migrants in the U.S. temporarily or without legal status while the case is under review.

A federal judge has temporarily blocked President Donald Trump’s executive order ending the constitutional guarantee of birthright citizenship regardless of the parents’ immigration status.

U.S. District Court Judge John Coughenour’s ruling in the case brought by Washington and three other states is the first in what is sure to be a long legal fight over the order’s constitutionality.

On Tuesday, Attorney General Kris Mayes, along with the attorneys general of Washington, Oregon and Illinois, sued the Trump ...