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 Law School. He teaches the basic course on taxation and courses on international taxation, corporate taxation, tax treaties and transnational law. He is currently a member of the Steering Group of the OECD International Network for Tax Research and Chair of the ABA Tax Section Tax Policy Committee, an International Research Fellow of the Oxford University Centre for Business Taxation, and a Trustee of the American Tax Policy Institute. From 1989 to 1993, Prof. Avi-Yonah practiced tax law in Boston and New York, specializing in the international tax aspects of mergers and acquisitions. From 1994 to 2000 he was Assistant Professor of Law at Harvard Law School. He has served as consultant to the U.S. Treasury and the OECD on tax competition issues, and has been a member of the executive committee of the New York State Bar Association Tax Section and of the Advisory Board of Tax Management, Inc. He has published numerous articles on domestic and international tax issues, and is the author of International Tax as International Law: U.S. Tax Law and the International Tax Regime (Cambridge Univ. Press, 2007) and U.S. International Taxation: Cases and Materials (Foundation Press, 2nd ed. 2005, with Brauner & Ring), and co-editor of Comparative Fiscal Federalism: Comparing the U.S. Supreme Court and European Court of Justice Tax Jurisprudence (Kluwer, 2007). Prof. Avi-Yonah graduated summa cum laude from the Hebrew University in 1983, received a PhD in History from Harvard University in 1986, and received a JD magna cum laude from Harvard Law School in 1989. Nicola Sartori is a lecturer in "Comparative Law and Economics of Taxation" at the International University College of Turin, Italy and also holds a temporary chair in "International and Comparative Taxation" at the University of Modena Law School, Italy. She holds a degree in Law and Business Administration, summa cum laude, from Bocconi University, Milan, a Ph.D in Tax Law from the University of Milan - Bicocca, and a LL.M. in International Taxation and a S.J.D. from the University of Michigan Law School. Omri Marian practices tax law at the New York Office of Sullivan & Cromwell LLP. He holds a degree in Law and Political Science, magna cum laude, from Tel Aviv University, Tel Aviv, Israel, and an LL.M. in International Taxation and an S.J.D., from the University of Michigan Law School, Ann-Arbor, Michigan.