Woodrow Wilson went to the table of the Treaty of Versailles with an agenda of creating the League of Nations. The nations of the world wanted to talk about their agendas not his 14 points. They were after revenge, retribution and admission of guilt when his agenda was peace and democratic ruling nations and alliances for his agendas. They basically had to promise him he would get his league if he got the Germans to sign the their Treaty and agreed to sign it too. He went back home and things changed while he was gone. He had to compromise. The US did not become part of the League because the US Congress did not go along with it. see related links below.