The precedence principle means that the Member States may not apply national regulations contrary to EU law. European Union law can thus be said to have precedence over national law, including Member States' own constitutional regulations.

This report is part of a broader analysis of the constitutional implications of the development of criminal law in Community law. It provides a systematic overview over the development of criminal law within the European Union.

This report aims at providing systematic knowledge about a central, yet underresearched, political body within the European Union, namely the European Council. The closed nature of the meetings and summits of the heads of state and governments makes empirical research on the functioning of the European Council very difficult.

SIEPS’ annual conference 2006 was held on the theme Why Europe? Possibilities and limits of European integration. The focus of the conference was the consequences of the failure to ratify the Constitutional Treaty from different scholarly perspectives.

Issue 4 of the European Policy Analysis deals with the mandate to the reform treaty agreed at the European Council meeting on 23 June 2007. The new treaty represents a new attempt to give the EU new tools to address future challenges.

The analysis deals with the constitutional developments in the Court of Justice, particularly in the development of the EC's competence in criminal matters.   The analysis is part of the research project The constitutional development of the European Union and was presented at the seminar Who Shapes the Future of Criminal Law? 2007:2epa Spillover or activist leapfrogging? Criminal Competence and the Sensitiveness of the ECJ (166.

This report analyzes current tendencies in decision-making and the evolving concept of “legislation” in the EU. The causes and consequences of the “legal basis game” are discussed.

This report concerns the role of the national courts in the application and enforcement of Community law. According to the author the European Union is presently under a "constitutional momentum".

In discussions on priorities in the European Union, a formula often invoked is that of European added value. The present study seeks to shed light on this concept by tracing its intellectual origins, examining its use in three policy areas and suggesting ways of converting it from an all-purpose mantra into an efficient tool for priority-setting and policy choices.

This report gives an overview of the Commission’s agenda for European governance reform as set out in the White Paper of Governance adopted by the Commission in 2001, focusing on how the Commission envisages its own role in the EU decision-making process. Furthermore, it describes how a number of follow-up documents adopted by the Commission have essentially given effect to the initial recommendations and proposals set out in the White Paper.