ABSTRACT
The Court of Justice of the European Union (EU) is insistent both that EU law has supremacy and that it be uniformly applied within Member States. Having examined the structure, institutions and sources of EU law, it is necessary to turn attention to the interaction between EU law and the domestic law of Member States. From 1973 until departure from the EU, a vast body of EU law has entered domestic law. Article 267 of the Treaty on the Functioning of the EU represents a vital means by which the harmony of laws between Member States is achieved. The task of uniformity is problematic as all nation states adopt and adapt to the requirements of EU law. At a conceptual level, the manner in which international law, of which EU law may be regarded as a sui generis example, is dependent upon whether a particular state adopts a monist or dualist approach to international law.
