the Commission, and give direction to the Commission and the Union as a whole. The treaties state that "the Commission shall work under the political guidance of its president" (Article 219 TEC), this is conducted through their calling and chairing of meetings of the college of Commissioners, their personal cabinet and the meetings of the heads of each commissioner's cabinet (the Hebdo). The president may also force a Commissioner to resign. The work of the Commission as a body is based on the principle of Cabinet collective responsibility, however in their powers they act as more than a first among equals. The role of the president is similar to that of a national Prime Minister chairing a cabinet. The president also has responsibility for representing the Commission in the Union and beyond. For example, they are a member of the European Council and takes part in debates in Parliament and the Council of Ministers. Outside the Union they attend the meetings of the G8 to represent the Union. However, in foreign affairs, the president does have to compete with several Commissioners with foreign affairs related portfolios: the High Representative for the Common Foreign and Security Policy and the president of the European Council. The presidential system had started to develop since Jacques Delors and has since been cemented. However, externally they are still dependent on support from the Council and Parliament. Delors had enjoyed the Parliament's and the Council's support for his whole term, during which, through treaty changes, the Parliament increased in powers and, through the accession of new Member States, the Council increased in membership. The membership is now so large the president is increasingly unable to garner the support of all the states, even though the job is supposed to try to keep everyone happy. The Parliament now has more powers over the Commission and can reject its proposals, although the Commission has little power over Parliament, such as the ability to dissolve it to call new elections. The president's office is on the top, 13th, floor of the Berlaymont building in Brussels. The president receives their political guidance from their cabinet, the head of which acts as a political bodyguard for the president. Such factors can lead to an isolation of the president from outside events. For the European Civil Service the president has a very high status, due to their immense authority and symbolism within