Union of South American Nations in Mitad del Mundo, Ecuador, where the cornerstone was laid for the headquarters of the General Secretariat of the Union. In April 2018, six countries suspended membership: Argentina, Brazil, Chile, Colombia, Paraguay and Peru. In August 2018, Colombia announced its withdrawal from the organization. At the Third South American Summit on 8 December 2004, presidents or representatives from 12 South American nations signed the "Cusco Declaration", a two-page statement of intent announcing the foundation of the South American Community. Panama and Mexico attended the signing ceremony as observers in Brazil. The mechanics of the new entity came out of the
Covenant of the League of Nations obligation to join the League of Nations, as a result of strong objection from U.S. politicians. Although Wilson had secured his proposal for a League of Nations in the final draft of the Treaty of Versailles, the U.S. Senate refused to consent to the ratification of the Treaty. For many Republicans in the Senate, Article X was the most objectionable provision. Their objections were based on the fact that, by ratifying such a document, the United States would be bound by international contract to defend a League of Nations member if it was attacked. Henry Cabot Lodge from Massachusetts and