The European Union is on the brink of fundamental change. Just as the EU is about to enlarge radically, the Convention on the Future of Europe may transform it into a political entity governed by a constitution. This timely volume brings together a world-class group of scholars and practitioners to examine the fundamentals of integration in an expanding EU. The contributors are a mix of leading theorists and practitioners, spanning the principal disciplines with an interest in European integration. They explore key questions about the nature of the EU, its structure and procedures, but also take a more profound look at the social, political and economic dimensions of integration and their relevance for a revitalised European Union. Table of Contents Part I: The Constitutional and Normative Foundations: 1. Introduction: Reassessing the Fundamentals:Iain Begg, John Peterson and J.H.H. Weiler. 2. A Constitution for Europe? Some Hard Choices: J.H.H. Weiler. 3. Is There Europe for a Constitution?: Miguel Poeares Maduro. 4. Tolerance and Process: Jo Shaw. 5. Reforming European Institutions of Governance: Johan P. Olsen. 6. Institutionalism and Constitutional Reform: Simon Bulmer. 7. Reform, Institutions and Governance: Alberta Sbragia. 8. Reassessing Legitimacy in the European Union: Andrew Moravcsik. 9. Analysing the Democratic Deficit - Methodological Priors: Andrew Scott. 10. Reassessing the Legitimacy Debate: Wolfgang Wessels. 11. The European Social Model: Fritz W. Scharpf. 12. Strength and Deficits of the Open Method: Mario Telo. Part II: New Dimensions of European Integration: 1. Social Inclusion and the European Union: Tony Atkinson. 2. A View from the Periphery: Ana Guillen. 3. "Squaring the Circle" in European Social Policy?: Martin Rhodes. 4. European Integration and Industrial Relations: Paul Marginson and Keith Sisson. 5. Convergent Divergence or Divergent Convergence?: Jelle Visser. 6. Evolving nestedness but still national traditions: Robert Boyer. 7. Chall