Sorry, Strom. West Virginia mainstay Robert Byrd is now the longest-serving Senator in American history, having been in office 17,327 days. (He first won his seat in 1958.) “Although he is frail and walks with two canes, Byrd still gives theatrical speeches on the importance of preserving the Senate’s traditional powers and other issues dear to him. Some of his most emotional orations in the past three years have involved the Iraq war, which he opposed from the start and considers a historic misadventure.“