In the late summer of 1950 currie he emigrated to Colombia and a few years later renounced his American citizenship.<ref>John Earl Haynes and Harvey Klehr, ''Venona: Decoding Soviet Espionage in America'' (New Haven: Yale University Press, 1999), p. 150.</ref> | In the late summer of 1950 currie he emigrated to Colombia and a few years later renounced his American citizenship.<ref>John Earl Haynes and Harvey Klehr, ''Venona: Decoding Soviet Espionage in America'' (New Haven: Yale University Press, 1999), p. 150.</ref> |