 His 1957 publication "The Agony of Imperialism", resulted in the loss of his job and his barring from employment as a journalist in Argentina.In 1960, he was employed briefly as an economic consultant to the Argentine government.In 1961, he was imprisoned for a few months on the charge that he was a member of the Uturuncos, guerrillas active in northwest Argentina during 1960 and 1961.