In 1931, he joined the Spanish Socialist Party (PSOE). It socialist deputy in the constituent elections of 1931 and chairman of the Drafting Committee of the Constitution of the Spanish Republic in 1931. Director of the Institute for Professional Studies, participated in drafting the Penal Code of 1932. His brilliant defense and subsequent acquittal of Francisco Largo Caballero, who is accused of instigating the Revolution of Asturias, which motivates life-threatening. Vice President of the Courts (1936).
During the war provoked by the military uprising of General Franco’s ambassador to Poland and Checolosvaquia and representative to the League of Nations. In 1939, exiled in Paris, arriving in Argentina in September of that year to give lectures at the Faculty of Law at the Universidad Nacional de La Plata. The following year was appointed extraordinary professor of the River Plate University and director of the Institute of Professional Law and Criminology. Later he was appointed director of the Institute of Advanced Legal Studies of the Faculty of Law. Newspaper is affiliated with the exile Spain Free. In 1943 military coup because of their resignations and professorship, which does not return until mid-1945. In December 1946, following the arrival of Juan Domingo Peron to power, returns to resign their positions and professorship. Between 1955 and 1958 exercises the faculty of the Universidad Nacional del Litoral in Santa Fe hired by the University of Buenos Aires.
In February 1962 he held the position of President of the Republic in exile, from Buenos Aires. He appoints the head of the Republican Government Claudio Sanchez Albornoz, a former rector of the University of Madrid. In 1966, the “night of long poles, as a result of the dictatorship of General Juan Carlos Ongania definitely takes him away from classrooms, founding the Institute of Advanced Legal Studies of the Association of Lawyers of Buenos Aires and the Law Review Penal and Criminology, which he directed until his death. Among the many works of Jimenez de Asua highlight: The professional law of the future (1916), Necessity (1922), Freedom to love and right to die (1929), Serving the Next Generation (1930), The Theory legal crime (1931), professional Psychoanalysis (1940), The Criminalist (1941-1949, 8 vols.), The Constitution of the Spanish democracy (1942), Law and Crime (1945), The Constitution of democracy Spanish and the regional problem (1946), the indeterminate sentence (1948), Professional Law Treaty (1949-1963, 7 vols.), his work fundamental issues of professional law (1953), The Spanish legal thought and its influence in Europe (1958), Lombroso (1960) and Chronicle of Crime (1970). As the eminent jurist said: “For my thoughts have always been socialist.” Francisco Arias Solis Cadiz Garzon. WITH DEMOCRATS Judge Baltasar Garzon Association for a democratic justice and a dignified judiciary. Internet Users for Peace and Freedom and Free Forum.