Goldwater became most associated with labor-union reform and anti-communism; he was a supporter of the conservative coalition in Congress. His work on labor issues led to Congress passing major anti-corruption reforms in 1957, and an all-out campaign by the AFL-CIO to defeat his 1958 reelection bid. He voted against the censure of Senator Joseph McCarthy in 1954, but he never actually charged any individual with being a communist/Soviet agent. Goldwater emphasized his strong opposition to the worldwide spread of communism in his 1960 book "The Conscience of a Conservative". The book became an important reference text in conservative political circles.