Carla Hills spoke on the topic of "The State of Play in Doha and the Future of Multilateral Trade Negotiating Rounds and of the World Trade Organization" at the Eighth Annual Former US Trade Representative Seminar held at the Peterson Institute for International Economics, February 13, 2008. Other USTRs at the event were Clayton Yeutter, William Brock, Charlene Barshefsky, Mickey Kantor, and Robert Portman. Current USTR Ambassador Susan Schwab presented the luncheon address at the event.