how did world war I affect woodrow wilson's reputation?

Answer 1

In a positive way because Wilson believed in being responsible in foreign affairs. He had a detailed plan to deal with WW1 and it was popular.

Answer 2

In the late stages of the war he took personal control of negotiations with Germany, especially with the Fourteen Points and the Armistice. He went to Paris in 1919 to create the League of Nations and shape the Treaty of Versailles, with special attention on creating new nations out of defunct empires. Wilson collapsed with a debilitating stroke in 1919, as the home front saw massive strikes and race riots, and wartime prosperity turn into postwar depression. He refused to compromise with the Republicans who controlled Congress after 1918, effectively destroying any chance for ratification of the Treaty of Versailles. The League of Nations went into operation anyway, but the U.S. never joined. Wilson's idealistic internationalism, whereby the U.S. enters the world arena to fight for democracy, progressiveness, and liberalism, has been a highly controversial position in American foreign policy, serving as a model for "idealists" to emulate or "realists" to reject for the following century.