He has also advised the National People's Congress of China on government liability and the UK Select Committee of the House of Lords on the ratification of the draft European Union Constitution.
Bermann has testified before Congress on several occasions, including before the Senate Judiciary Committee on the OPEC countries and sovereign immunity (2004), the House Committee on Foreign Affairs on Colombian practice in international arbitration and Andean legislation benefits (2002), and the House Committee on Government Operations on tort liability of federal public officials (1983).