Sovereignty as One of the Main Criteria for the Constitutionality of EU Law

In this work sovereignty as one of the main criteria to the recognition of the basis of EU law as the supranational constitutional law is analyzed. Different approaches to the sovereignty concept are studied in the works of Ukrainian and foreign scientists in the sphere of constitutional, international and European Union law, as well as in the judgments of the European Court of Justice. The conclusion that EU and its legal system was created by the constitutive power of the EU peoples and that sovereignty realization on EU level is the criteria for constitutionality of EU law (as constitutional law traditionally deals with power and authority) is made.