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 issued a temporary restraining order against President Donald Trump's executive order targeting a law firm over its work for Hillary Clinton's 2016 election campaign.

U.S. law firm Perkins Coie has hired outside lawyers from Williams & Connolly in response to President Donald Trump's executive order last week punishing the firm over its prior work for Hillary Clinton and its internal policies promoting diversity and inclusion.