The Niagara Falls peace conference started on May 20, 1914, when the ABC Powers met in Niagara Falls, Canada, for diplomatic negotiations in order to avoid war between the United States and Mexico. There was increasing tensions between the two over the Tampico Affair of April 9, 1914 and the subsequent United States occupation of Veracruz of April 21, 1914 during the Mexican Revolution. At the conference, the United States was represented by Frederick William Lehmann, a former United States Solicitor General; and Joseph Rucker Lamar, an Associate Justice of the Supreme Court of the United States.[1] On May 27, 1914 to celebrate their success, the ABC envoys and the American and Mexican delegates to the conference attended a royal garden party given by the Duke of Connaught, the Governor General of Canada at the King Edward Hotel.[2]