After the death of Senator Robert W. Byrd (D-West Virginia) on June 28, 2010, a bona fide war hero, Senator Daniel Inouye (D-Hawaii), served as President Pro Tempore of the U.S. Senate. The President pro tempore (aka President pro tem, Latin meaning “for the time being”) is the second-highest-ranking official of the United States Senate, the highest-ranking Senator, and third in line of succession to the President, after the Vice President and the Speaker of the House. The U.S. Constitution states that the Vice President is the President of the Senate, voting only in case of a tie. During the Vice President’s absence, the President pro tem is the highest-ranking official in the Senate and may preside over its sessions. The President pro tem is elected by the Senate and is customarily the most senior Senator in the majority party.