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.

Lawyers for Gwynne Wilcox argued that board members can only be fired ‘for neglect of duty or malfeasance in office’ and only after giving notice and holding a hearing. A federal judge ruled Thursday that President Donald Trump acted illegally when he fired a member of an independent labor agency,