Citizenship of the Union and Freedom of Movement of Persons, sets out to analyse in detail the various provisions of Community law which confer upon individuals the right to move about, reside and work in the Member States. It also examines the procedural safeguards which set those fundamental rights apart from any deriving from other international bodies or organisations and point up the originality of the Community system. Citizenship of the Union entails freedom of movement under the current Treaties and also under the Treaty of Lisbon, in which the unified treatment of the rules, by contrast with the existing pillars of Community and European Union law, might be expected to confer new impetus on the realisation of the area of freedom, security and justice. If there is truly to be such an area, there must be unified, not merely coordinated action. Judicial cooperation must be tightened in favour of the Union and, more importantly, individuals, be they Community citizens or indeed nationals of third countries, given the increasing trend towards a kind of integration which focuses less on formal data such as nationality and more on factors such as residence, employment and social integration. The book pays particular attention to this last aspect and its political and legal implications. The "communitarisation" of immigration policy (the new Title IV of the EC Treaty mentioned above) and the perspectives opened up by the enlargement to 27 Member States (and more) and by the Treaty of Lisbon, provide the framework for the treatment given in the present work.