immigration, railway construction, and booming agricultural exports. In May 1886 Roca was the subject of a failed assassination attempt. Continuing political involvement Roca himself had put forward Juárez Celman as his successor, who was his brother-in-law. However, Celman distanced himself from Roca. Celman's government was ultimately tarnished by the Baring crisis and corruption allegations. Roca did not participate in the 1890 revolution attempt against Celman, which was instigated by Leandro N. Alem and Bartolomé Mitre (Unión Cívica, later Unión Cívica Radical). However, he was pleased in the resulting weakness of Miguel Juárez Celman. After his first presidency Roca remained important politically, becoming a senator and Minister of the Interior under Carlos Pellegrini. After President Luis Sáenz Peña resigned in January 1895, José Evaristo Uriburu took over the presidency, when Roca was President of the Senate. Because of this, Roca again assumed the duties of President between 28 October 1895 and 8 February 1896, when Uriburu was ill. Second presidency In the middle of 1897 the Partido Autonomista Nacional party put forward Roca as a presidential candidate once more. Unopposed, he was able to begin a second regular term in office on 12 October 1898. During his second presidency, the Ley de Residencia law was passed, which made it possible to expel some of Argentina's trade union leaders, who were noncitizen anarchists and socialists deemed dangerous to Argentina. During this presidency military service was introduced in 1901 and a border dispute with Chile was settled in 1902. Luis Drago, Roca's foreign minister, articulated the Drago Doctrine of 1902 asserting that foreign powers could not collect public debts from sovereign American states by armed force or occupation of territory. Argentina's foreign debt increased in this period, although economic growth continued. Roca was unable to continue his political domination, and he was unable to essentially name his successor. Roca's second term ended in 1904, and is considered less successful than his first. Later years In 1912 Roca was appointed as Special Ambassador of Argentina to Brazil by President Roque Sáenz Peña. Roca returned to Argentina in 1914 and died in Buenos Aires on October 19, 1914. He was buried in La Recoleta Cemetery in Buenos Aires. His son, Julio Argentino Roca, Jr., became vice-president of Argentina in 1932 to 1938. Legacy Roca's thought has been associated with the idea of Juan Bautista Alberdi around the idea of a "possible republic": a republican government,