Despite the general prohibition of State aid, in some circumstances government interventions is necessary for a well-functioning and equitable economy. Therefore, the Treaty leaves room for a number of policy objectives for which State aid can be considered compatible . The legislation stipulates these exemptions . The l aws are regularly reviewed to improve their efficiency and to respond to the European Councils' calls for less but better targeted State aid to boost the European economy. The Commission adopts new legislation is adopted in close cooperation with the Member States.