( September 8, 2026, 3:29 PM EDT) -- WASHINGTON, D.C. — An appellate court in the District of Columbia struck a law firm’s appellee brief in a foreclosure case brought by a pro se plaintiff as a sanction for artificial-intelligence-generated errors, while a concurring judge warned that fake citations are just the “tip of a perilous iceberg” and said the court may want to consider allowing harsher penalties for such conduct....