On March 4, 1789, the United States Senate met for the first time in an opulent second-floor chamber of New York City's recently rebuilt Federal Hall. On that day, just eight of the 22 qualified members (representing the 11 states that had previously approved the Constitution) were present. The remaining four members did not arrive until July 25. The Senate convened every three days until the end of 1790 when it was determined that more frequent meetings would be too expensive and out of touch for a body composed primarily of elected officials who could hold office for only three years. The current Senate Chamber was built between 1846 and 1850 by Thomas Jefferson, James Madison and Benjamin Henry Latrobe. It was originally known as the Old Senate Chamber because the new Congress met in it for the first time on February 1, 1851. It remains today as the meeting place of the world's oldest continuous sitting legislative body. Over the years, many famous people have walked its halls. Chief Justice John Roberts and his wife, Cynthia, were married here in 2005. So was former President Bill Clinton in 1993 when he came before a joint session of Congress to ask for authorization for use of military force against Iraq's Saddam Hussein. In 1971, Senator Robert Kennedy gave a speech here after being nominated for president at the California Democratic Convention. And in 1913, Senator William Borah of Idaho delivered the keynote address at the opening session of the World Peace Conference held in Paris under the sponsorship of the American government.