In October 2005, a group of distinguished tax experts from the European Union and the United States, who had never met before, convened at the University of Michigan Law School for a conference on "Comparative Fiscal Federalism: Comparing the U.S. Supreme Court and European Court of Justice Tax Jurisprudence." The purpose of the conference was to shed comparative light on the very different approaches taken by the European Court of Justice (ECJ) and the U.S. Supreme Court to the question of fiscal federalism. The conference was sponsored by the U-M Law School, U-M's European Union Center, and Harvard Law School's Fund for Tax and Fiscal Research.
Avi-Yonah, Reuven S. "Comparative Fiscal Federalism: What Can the U.S. Supreme Court and the European Court of Justice Learn From Each Other's Tax Jurisprudence?" J. Int'l Inst. 13, no. 2 (2006).