The European Union is constantly changing, both in the number of countries it embraces and in policy areas where it plays a major role. The new millennium has witnessed two major changes in the EU's scope. On 1 May 2004, it enlarged to include ten new member states; and the new European Constitution defines providing citizens with an 'area of freedom, security and justice' as one of its primary aims. This book is unique in analyzing the interplay of the two spheres.