2. The constitutional base of the Union

Abstract

This chapter discusses the Treaties which together represent the primary law of the European Union; its constitutional base. These include the Single European Act 1986; the Treaty on European Union (the Maastricht Treaty) 1993; the Treaty of Amsterdam (signed June 1997, entered into force 1 May 1999); the Nice Treaty (adopted December 2001, entered into force 1 February 2003); and the Treaty of Lisbon (signed December 2007, entered into force 1 December 2009).