The New Free Movement Architecture
This chapter provides a conceptual analysis of judicial deference in free movement law. It argues that the reason for the growing relevance of deference in free movement cases is rooted in a shift in focus away from the scope of rights towards justification and proportionality. The European Court of Justice has created two deference doctrines: the margin of appreciation and decentralized judicial review. While the margin of appreciation doctrine is employed to pass certain regulatory decisions over to national legislatures and executives, decentralized judicial review is used to delegate responsibilities connected with free movement review to national courts. Both deference techniques represent a departure from the Cassis de Dijon approach, which has, for a long time, defined large parts of free movement adjudication, and have significant institutional consequences.