a time when President Kennedy was pondering the future of his vice president, Lyndon Johnson, Williams exposed corruption in the office of U.S. Senate aide Bobby Baker, Johnson's protégé. Williams did not sign the 1956 Southern Manifesto, and voted in favor of the Civil Rights Acts of 1957, 1960, and 1964, as well as the 24th Amendment to the U.S. Constitution, the Voting Rights Act of 1965, and the confirmation of Thurgood Marshall to the U.S. Supreme Court, but voted against the Civil Rights Act of 1968. Williams was the distinctive 67th vote in favour of ending the filibuster of the 1964 Civil Rights Act, leading Mike Mansfield to proclaim "That's it!". In 1967, Williams helped defeat a proposed rule change that would have eliminated the filibuster, a tool that had been of great use to him in exposing government waste and misconduct. In 1968, unable to defeat the tax increase proposed by President Johnson, Williams worked with Democratic U.S. Senator George Smathers of Florida to simultaneously cut federal spending by $60 billion. Williams, as well as his Senate colleague Prescott Bush of Connecticut, was considered a possible running mate for Republican presidential nominee Dwight D. Eisenhower in 1952, but removed himself from consideration. He was also considered for a spot on the Republican ticket in 1964 and as a possible replacement for Spiro Agnew when he resigned as vice president of the United States in 1973. Williams was a delegate to the Republican National Conventions in 1948 and 1956. In 1965, Williams began pressing for a law that would set a mandatory retirement age of 65 for all elected officials. Though mandatory retirement was never enacted, Williams announced in 1969 that he would not seek a fifth term in the U.S. Senate. On December 31, 1970, he resigned from the Senate just before the end of his term, allowing his protégé, newly elected Republican William V. Roth, Jr., to gain additional seniority in his new class of U.S. senators. In September 1966, Williams assailed the anti-inflation program of the Johnson administration as a "piece-meal approach" to a larger issue and advocated for a five percent across the board tax hike as well as Congress resuming a leadership role on the subject of enacting "necessary remedies to stave off financial collapse that may engulf us". Death and legacy Williams died in a hospital in Lewes, Delaware and was buried in