John Sherman (1823–1900) was an American congressman and senator from Ohio during the second half of the nineteenth century. The brother of General William Tecumseh Sherman, he was the principal author of the Sherman Antitrust Act of 1890. As a Republican senator, he worked on legislation to restore the nation's credit abroad and produce a stable, gold-backed currency at home. Serving as Secretary of the Treasury under President Rutherford B. Hayes, Sherman helped to end wartime inflationary measures and to oversee the law allowing dollars to be redeemed for gold. He returned to the Senate after his term ended, continuing his work on financial legislation, as well as laws on immigration, business competition, and interstate commerce. In 1897, he was appointed Secretary of State by President William McKinley, but due to failing health, retired in 1898 at the start of the Spanish–American War. (This article is part of a featured topic: 1880 United States presidential election.)