 He founded and remains secretary of the Eric Voegelin Society.He was elected president of the Philadelphia Society in April 2000.After the Velvet Revolution of 1989, Sandoz has addressed the Federal Assembly of Czechoslovakia and conducted lectures and a series of conferences on "The Federalist Papers", and other aspects of the Anglo-American constitutionalism and liberty and Western political philosophy, for academic and political leaders in Czech Republic, Slovakia, and Poland.