European Union Law uses a distinctive three-part structure to examine the constitutional foundations, legal powers, and substantive law of the European Union. This third edition includes an updated dedicated chapter on the past, present, and future of Brexit. Part I looks at the constitutional foundations including a constitutional history and an examination of the governmental structure of the European Union. Part II looks at governmental powers. It covers legislative, external, executive, judicial, and limiting powers. The final part considers substantive law. It starts off by examining the free movement of goods, services, and persons. It then turns to competition law and finally ends with an analysis of internal and external policies.