Wilson strongly opposed the reservations, and after the Senate rejected the Treaty twice, the Treaty of Versailles was defeated.The "Solemn Referendum" of 1920Wilson decided to settle the treaty issue in the presidential campaign of 1920; if voters elected a Democrat, then this would mean they supported the treaty.The Republicans chose Senator Warren G. Hardingas their presidential nominee for the election of 1920. Their vice-presidential nominee was Governor Calvin Coolidge. The Republican platform appealed to both pro-League and anti-League sentiment in the party.Democrats nominated pro-League Governor James. M. Coxfor president and chose Franklin D. Rooseveltfor vice-president.Warren Harding won the election of 1920. Harding's victory led to the death of the League of Nations.The Betrayal of Great ExpectationsAfter WWI, America became isolationist and it did not embrace a role as a global leader. In the interests of its own security, the United States should have used its enormous strength to shape the world. It instead allowed the world to drifttowards another war.