The Rules of Federalism: Institutions and Regulatory Politics in the EU and Beyond. By Daniel Kelemen. Cambridge, MA: Harvard University Press, 2004. 256p. $49.95.

In this engaging, clearly written volume, Daniel Kelemen synthesizes and elaborates a theoretical model that contributes to several literatures. As a study of the European Union, it stands at the logical endpoint of a growing trend toward the application of analytical tools drawn from conventional comparative politics. As an account of governmental institutions, the broad analytic narrative breaks new ground in sorting out the consequences of federalism. As an analysis of public policy, especially environmental policy, the book offers a new argument about the institutional sources of regulatory politics.