Why the US Failed to Ratify the Treaty after WWI

Treaty of Versailles 1919
After the armistice of World War I, the Allied powers were left with the task of figuring out the conditions to end the war. Germany would have to agree to whatever the Allied powers came up with, or face the threat of being occupied by Allied powers. Each nation submitted its requests for the Treaty. After compiling each of the nation's requests and cutting some of each nations request, the Treaty was sent to each nation to be ratified. All of the nations involved ratified the treaty except for the US. The Treaty of Versailles was unable to be ratified by the US because President Wilson was unwilling to compromise on the League of Nations.
…