A federal judge said Gwynne Wilcox must remain at the agency that oversees relations among workers, labor unions and employers, setting up a Supreme Court showdown over presidential powers.

President Donald Trump’s firing of the former chairwoman of the National Labor Relations Board was an “illegal act,” a federal judge ruled Thursday, overturning her ousting in a decision that was highly critical of Trump’s “intent on pushing the bounds of his office.

A federal judge on Thursday said U.S. President Donald Trump's firing of a Democratic member of the National Labor Relations Board was illegal and ordered that she be reinstated to her post. The decision by U.