Why did Wilson's peace treaty fail?

Wilson's peace treaty, particularly the Treaty of Versailles, failed primarily due to opposition from the U.S. Senate, which rejected the treaty over concerns about the League of Nations and its potential to entangle the U.S. in foreign conflicts. Additionally, Wilson's idealistic approach clashed with the more pragmatic desires of European leaders who sought reparations and territorial gains. His inability to compromise and garner bipartisan support contributed to the treaty's ultimate failure. This rejection weakened the League of Nations and set the stage for future conflicts.