About 4,000 people gathered at the cathedral for the service, including President and Mrs. Bush, former president George H. W. and Barbara Bush, Gerald and Betty Ford, Jimmy and Rosalynn Carter, and Bill and Hillary Clinton. Members of Congress, such as Dick Cheney, Howard Baker, Sandra Day O'Connor, and Dennis Hastert, and past and present governors were also present. Foreign leaders also attended Mikhail Gorbachev, Margaret Thatcher, Brian Mulroney, and Prince Charles (representing Queen Elizabeth II). 