Reuven S. Avi-Yonah is the Irwin I. Cohn Professor of Law and director of the International Tax LLM Program at the University of Michigan. He specializes in corporate and international taxation and has served as a consultant to the US Department of the Treasury and the Organisation for Economic Co-operation and Development (OECD) on tax competition. He also is a member of the steering group for OECD’s International Network for Tax Research. Avi-Yonah is a member of the American Law Institute, a fellow of the American Bar Foundation and the American College of Tax Counsel, and an international research fellow at Oxford University’s Centre for Business Taxation. In addition to prior teaching appointments at Harvard University (law) and Boston College (history), he has practiced law with Milbank, Tweed, Hadley & McCloy in New York; with Wachtell, Lipton, Rosen & Katz in New York; and with Ropes & Gray in Boston. He has published more than 250 books and articles, including Advanced Introduction to International Tax Law, Global Perspectives on Income Taxation Law, and International Tax as International Law.