 He also served as a senator for "Aconcagua" between 1897 and 1906.President Federico Errázuriz Echaurren appointed him Ministers of Foreign Affairs, Cult and Colonization (1899–1900) and President Germán Riesco appointed him Minister of the Interior (1904).In 1907, Errázuriz was named Ambassador to the Holy See, a position he held until 1921.