they were too much alike and that the president did not gain much from the advice of someone who rarely contradicted him. Alternatively, Taft wanted to be chief justice, and kept a close eye on the health of the aging incumbent, Melville Fuller, who turned 75 in 1908. Taft believed Fuller likely to live many years. Roosevelt had indicated he was likely to appoint Taft if the opportunity came to fill the court's center seat, but some considered Attorney General Philander Knox a better candidate. In any event, Fuller remained chief justice throughout Roosevelt's presidency. Through the 1903 separation of Panama from Colombia and the Hay–Bunau-Varilla Treaty, the United States had secured rights to build a canal in the Isthmus of Panama. Legislation authorizing construction did not specify which government department would be responsible, and Roosevelt designated the Department of War. Taft journeyed to Panama in 1904, viewing the canal site and meeting with Panamanian officials. The Isthmian Canal Commission had trouble keeping a chief engineer, and when in February 1907 John F. Stevens submitted his resignation, Taft recommended an army engineer, George W. Goethals. Under Goethals, the project moved ahead smoothly. Another colony lost by Spain in 1898 was Cuba, but as freedom for Cuba had been a major purpose of the war, it was not annexed by the U.S., but was, after a period of occupation, given independence in 1902. Election fraud and corruption followed, as did factional conflict. In September 1906, President Tomás Estrada Palma asked for U.S. intervention. Taft traveled to Cuba with a small American force, and on September 29, 1906, under the terms of the Cuban–American Treaty of Relations of 1903, declared himself Provisional Governor of Cuba, a post he held for two weeks before being succeeded by Charles Edward Magoon. In his time in Cuba, Taft worked to persuade Cubans that the U.S. intended stability, not occupation. Taft remained involved in Philippine affairs. During Roosevelt's election campaign in 1904, he urged that Philippine agricultural products be admitted to the U.S. without duty. This caused growers of U.S. sugar and tobacco to complain to Roosevelt, who remonstrated with his Secretary of War. Taft expressed unwillingness to change his position, and threatened to resign; Roosevelt hastily dropped the matter. Taft returned to the islands in 1905, leading a delegation of congressmen, and again in 1907, to open the first Philippine Assembly. On both of his