AB, Harvard College; PhD in Economics, King's College, Cambridge University; JD, Georgetown University Law Center. 1974-80, US Treasury Department; Marcus Wallenberg Professor of International Financial Diplomacy, Georgetown University; since 1998, current position. Co-Author: US-China Trade Disputes - Rising Tide, Rising Stakes (2006); Economic Sanctions Reconsidered (2007); US Taxation of Foreign Income (2007); Global Warming and the World Trading System (2009); Figuring Out the Doha Round (2010).