When Wilson proposed establishment of a League of Nations, with the League's charter part of the Treaty of Versailles, Taft expressed public support. He was out of step with his party, whose senators were not inclined to ratify the treaty. Taft's subsequent flip-flop on the issue of whether reservations to the treaty were necessary angered both sides, destroying any remaining influence he had with the Wilson administration, and causing some Republicans to call him a Wilson supporter and a traitor to his party. The Senate refused to ratify the Versailles pact.