2. The Union institutions
This chapter focuses on the institutions responsible for executing the different tasks of the European Union (EU). The main seven institutions are complemented by two advisory bodies, the Committee of the Regions and the European Economic and Social Committee (EESC), which are responsible for gathering inputs for use in decision-making. The initial institutions of the Commission, Council, European Parliament, and Court of Justice of the EU were expanded to seven to include the European Council, Court of Auditors, and the European Central Bank in 2009 with the entry into force of the Maastricht and the Lisbon Treaties. This chapter also describes the roles and responsibilities of the institutions, including the Council of Ministers of the European Union, the European Parliament, and the European Court of Justice (CJEU).