President Donald Trump is once again threatening to fire Federal Reserve Governor Lisa Cook, this time through an aide who told her there is sufficient reason to believe she made false statements on one or more mortgage agreements. The aide, Dan Scavino, delivered the notice to Cook, according to reports. The allegations amount to mortgage fraud and remain unproven. This marks a renewal of Trump's effort to remove Cook after the Supreme Court struck down an earlier attempt. The notice did not identify which mortgage agreements were involved or provide further evidence. Cook has not publicly commented on the latest development. The move adds to ongoing friction between the White House and the Federal Reserve, although the reports do not tie this action to a specific policy dispute. The legal status of the new effort is unclear, and no court action has been announced.