 Upon his return to Buenos Aires, in 1868 he was assigned a diplomatic mission to Paris, France, by Presidente Bartolomé Mitre.During his posting, he was encharged of the newly created immigration office responsible for the recruitment of new immigrants and workers for the agriculture fields, unfortunately among this contingent of workers arrived in Argentina a large number of French revolutionaries.He died in Buenos Aires in 1875, shortly after arriving from his diplomatic posting to France of an intestinal problem; there is a conspiracy theory that he was poisoned by his political enemies.