President Donald Trump has removed a Democratic member of the U.S. National Labor Relations Board from office, an unprecedented move that will escalate an ongoing legal battle over the scope of the president's powers to control federal agencies.

Democrat Gwynne Wilcox, whose term was supposed to run through August 2028, said her unprecedented firing violates Supreme Court precedent.

The removal of the National Labor Relations Board’s general counsel had been expected. But the firing of a Democratic member stops it from protecting workers’ rights, for now.