Until newly, Andorra's political system had no clear division of power among administrator, legislative, and judicial branches. A Constitution ratified and approved in 1993 changed this, however. The Constitution establishes Andorra as a sovereign parliamentary democracy that retains the two Co-princes as its heads of state. The fundamental impetus for this political transformation was a recommendation by the Council of Europe in 1990 that, if Andorra wished to attain full integration into the European Union (EU), it should adopt a modern Constitution that guarantees the rights of those living and working there. Under the 1993 Constitution, the Co-princes continue as heads of state, but the head of government retains administrator power. The two Co-princes serve equally with limited powers that do not include veto over government acts. They are described in Andorra by a delegate. Each Co-prince, the President of France and the Bishop of Seu d'Urgell, maintain supreme authority in approval of all international treaties with France and Spain, as well as those dealing with internal security, defense, Andorran territory, diplomatic representation, and judicial or penal cooperation. Andorra's main legislative body is the 28-member General Council. The president, the vicepresident, and the members of the Council are elected in the general elections held every 4 years. The Council meets throughout the year on certain dates set by tradition or as required. The most recent general elections took place in March 2001. A president and a vicepresident are chosen by the General Council to implement its decisions. They serve 4-year terms and may be reappointed once. They obtain an annual salary. president have virtually no discretionary powers, and all policy decisions must be approved by the Council as a whole. Every 4 years, after the general elections, the General Council elects the head of government who, in turn, chooses the other members of the administrator Council. The current council has 10 ministers. The judicial system is independent. Courts apply the customary laws of Andorra, supplemented with Roman law and customary Catalan law. Civil cases are first heard by the batlles court--a group of four judges, two chosen by each Co-prince. Appeals are heard in the Court of Appeals. The highest body is the five-member Superior Council of Justice.