The role of national parliaments in EU matters has become an important subject in the debate over the democratic legitimacy of European Union decision-making. Strengthening parliamentary scrutiny and participation rights at both the domestic and the European level is often seen as an effective measure to address the perceived 'democratic deficit' of the EU - the reason for affording them a prominent place in the newly introduced 'Provisions on Democratic Principles' of the Union (in particular Article 12 TEU). Whether this aim can be met, however, depends crucially on the degree and the manner in which national parliaments actually make use of their institutional rights. This volume therefore aims at providing a comprehensive overview of th...