A judge imposed a temporary restraining order against the Trump administration, barring it from enforcing parts of an executive order penalizing a law firm.

WASHINGTON—A federal judge blocked most of a White House executive order punishing Perkins Coie, saying the administration had put itself at odds with the First Amendment by targeting the law firm based on President Trump’s dislike of its work for his political opponents.

A federal judge on Wednesday halted parts of President Donald Trump’s executive order that targeted a Democratic-linked law firm.