This book discusses some of the most important constitutional problems of the European Union: the role of the European Court and whether it is an objective interpreter of European law; the unusual nature of Community law; the principles on which the division of powers between the Union and Member States is based; the problem of enforcement and the different levels of compliance in different Member States; and the question whether sovereignty has been transferred to the EU. It is written for both specialist and non-specialist lawyers as well as for students of government European studies and international relations. To make it intelligible on different levels the text has been used to develop general ideas while the more specifically legal issues are explored in footnotes. It is hoped that the book will be of interest to all those who want to learn more about the basic issues of the Community