The Harmonization Potential of the Charter of Fundamental Rights of the European Union

This article discusses two underrated and connected aspects that determine the applicability of the EU Charter on Fundamental Rights to Member State measures. First, the Charter can be a decisive standard of review for domestic measures only when they are covered by EU law but are not precluded by it. In this respect, the distinction between non-preclusion and non-application of EU law has been over‐ looked by legal scholarship. Second, because the scope of application of EU law and that of the Charter are identical, the latter suffers from the same uncertainties as the former. This article concludes that the entry into force of the Charter has exposed the blurred contours of the application of EU law, in particular in the area of the market freedoms. As a result, a certain spontaneous harmonization of human rights protection has emerged.