Core Points - The Supreme Court will hear arguments regarding President Trump's authority to fire Federal Reserve Governor Lisa Cook on January 21 [1] - Trump announced on August 25 that he was firing Cook, alleging mortgage fraud related to her properties [1] - Cook denies any wrongdoing and has filed a lawsuit to prevent her removal [2] Legal Proceedings - A federal district court judge ruled in early September that Cook could not be removed while her lawsuit is ongoing [2] - The U.S. Court of Appeals for the District of Columbia upheld this ruling, prompting Trump to seek a Supreme Court decision on his firing authority [2]