Robert Alphonso Taft Sr. was an American politician, lawyer, and scion of the Republican Party's Taft family. Taft represented Ohio in the United States Senate, briefly served as Senate Majority Leader, and was a leader of the conservative coalition of Republicans and conservative Democrats who prevented expansion of the New Deal. Often referred to as "Mr. Republican", he cosponsored the Taft–Hartley Act of 1947, which banned closed shops, created the concept of right-to-work states and regulated other labor practices.
The elder son of William Howard Taft, the 27th President of the United States and tenth Chief Justice of the United States, Robert Taft was born in Cincinnati, Ohio. He pursued a legal career in Cincinnati after graduating from Harvard Law School in 1913. Along with his brother Charles Phelps Taft II, he co-founded the law partnership of Taft Stettinius & Hollister. Taft served in the Ohio House of Representatives from 1921 to 1931 and in the Ohio Senate from 1931 to 1933. Though he lost re-election in 1932, he remained a powerful force in state and local politics.
After winning election to the Senate in 1938 over incumbent Democrat Robert J.