Abstract

While academic contributions abound on the reach and impact of the European Union (EU) system of fundamental rights protection, and notably on the desirability of a more or less extensive control of Member States’ actions in light of the rights protected by the EU Charter of Fundamental Rights, there have been few attempts to explain the dynamics of integration-through-rights in the EU. This article proposes an explanatory framework inspired by a legal opportunities approach, which emphasizes the relevance of national and EU legal opportunities, and interactions between them, in determining the actual scope and pace of federalization through rights in the EU. It suggests that the weaker the legal opportunities for fundamental rights protection are at the domestic level, the greater the federalizing pressure is, and call for more empirical comparative studies to test this framework out.