Federal Reserve Governor Lisa Cook on Thursday filed suit in the U.S. District Court for the District of Columbia to block President Donald Trump’s attempt to remove her from the central bank’s Board of Governors. The complaint names Trump, the full Fed board and Chair Jerome Powell as defendants and seeks a temporary restraining order allowing Cook to remain in office while the case proceeds. Judge Cobb scheduled a hearing on Cook’s emergency motion for 10 a.m. Friday. Cook argues the president lacks authority to dismiss a Fed governor absent clear statutory “cause,” and says the mortgage-fraud allegation cited by Trump does not meet that standard. The court has issued summonses to the president and the Federal Reserve, and it plans to provide a listen-only public audio line for the proceeding. The lawsuit sets up what could become a major test of presidential power over independent agencies. Recent Supreme Court decisions, including Seila Law, expanded White House removal authority but also noted the Federal Reserve’s distinctive quasi-private structure, leaving unresolved how the justices would view an attempt to oust a Fed governor. Whichever way Judge Cobb rules, legal experts expect the dispute to move quickly toward appellate review and potentially to the Supreme Court.