The League of Nations
President Wilson called for an international organization for peace. (Since he was a big believer in peace.) It was an organization that would help prevent more wars like WW1 from occurring again. If countries could help disputes between countries, it might help prevent more bloodshed. Almost every nation loved this idea... except the U.S. Why?? Because, most of the U.S. believed in going back to isolation, so that war couldn't ever happen to their nation again. President Wilson traveled around the country trying to gain support for this organization. But many Americans wanted to block their country off from the rest of the world. Wilson was devastated by the results.