House Democrats requested a federal appeals court reconsider their recent ruling that allows former White House counsel Donald McGahn to defy a congressional subpoena seeking his testimony about possible obstruction of justice in the Mueller investigation. The ruling last month says House lawmakers cannot ask judges to force the White House to make McGahn available for questioning. Trump has barred top advisers from giving testimony, but House lawyers argued Friday that lawmakers might have to resort to arresting current and former White House officials for failing to respond to subpoenas.