The United States never joined the World Court, primarily because enemies of the League of Nations in the Senate argued that the Court was too closely linked to the League of Nations. The leading opponent was Senator William Borah, Republican of Idaho. The United States finally recognised the Court's jurisdiction, following a long and drawn out process. President Warren G. Harding had first suggested US involvement in 1923, and on 9 December 1929, three court protocols were signed. The U.S. demanded a veto over cases involving the U.S. but other nations rejected the idea.