with Canada. Britain at that time still handled Canada's foreign relations, and Taft found the British and Canadian governments willing. Many in Canada opposed an accord, fearing the U.S. would dump it when convenient as it had the 1854 Elgin-Marcy Treaty in 1866, and farm and fisheries interests in the United States were also opposed. After talks with Canadian officials in January 1911, Taft had the agreement, which was not a treaty, introduced into Congress and it passed in late July. The Parliament of Canada, led by Prime Minister Sir Wilfrid Laurier, had deadlocked over the issue. Canadians turned Laurier out of office in the September 1911 election and Robert Borden became the new prime minister. No cross-border agreement was concluded, and the debate deepened divisions in the Republican Party. Latin America Taft and his Secretary of State, Philander Knox, instituted a policy of Dollar Diplomacy towards Latin America, believing U.S. investment would benefit all involved, while diminishing European influence in regions where the Monroe Doctrine applied. The policy was unpopular among Latin American states that did not wish to become financial protectorates of the United States, as well as in the U.S. Senate, many of whose members believed the U.S. should not interfere abroad. No foreign affairs controversy tested Taft's policy more than the collapse of the Mexican regime and subsequent turmoil of the Mexican Revolution. When Taft entered office, Mexico was increasingly restless under the grip of longtime dictator Porfirio Díaz. Many Mexicans backed his opponent, Francisco Madero. There were a number of incidents in which Mexican rebels crossed the U.S. border to obtain horses and weapons; Taft sought to prevent this by ordering the US Army to the border areas for maneuvers. Taft told his military aide, Archibald Butt, that "I am going to sit on the lid and it will take a great deal to pry me off". He showed his support for Díaz by meeting with him at El Paso, Texas, and Ciudad Juárez, Mexico, the first meeting between a U.S. and a Mexican president and also the first time an American president visited Mexico. The day of the summit, Frederick Russell Burnham and a Texas Ranger captured and disarmed an assassin holding a palm pistol only a few feet from the two presidents. Before the election in Mexico, Díaz jailed opposition candidate Madero, whose supporters took up arms. This resulted in both the ousting