Trump’s executive order, signed in January, seeks to deny citizenship to children who are born to people who are living in the U.S. illegally or temporarily. It is part of the hard-line immigration agenda of the president, who has called birthright citizenship a “magnet for illegal immigration.”

A US judge has issued a new order blocking Donald Trump’s effort to curtail birthright citizenship, in the first legal challenge to the policy since the Supreme Court allowed it to move forward last month.