President of the European Council also led to their rejection. On 19 November 2009, Herman Van Rompuy, at that time Prime Minister of Belgium, was appointed the first full-time President of the European Council. The formal decision on the appointment was made after the Treaty of Lisbon came into force on 1 December 2009. The British Prime Minister, Gordon Brown, said that he had unanimous backing from the 27 EU leaders at the summit in Brussels on the evening of 19 November 2009. Brown praised Van Rompuy as "a consensus builder" who had "brought a period of political stability to his country after months of
President of the European Council mandate, this would strengthen the post within the European Council allowing for stronger leadership in addition to addressing the question of democratic legitimacy in the EU. However, this might cause conflict with Parliament's democratic mandate or a potential mandate for the Commission (see section below). To give a mandate to the European Council's president would signify a development of the Union's governance towards a presidential system, rather than a parliamentary system. There had been disagreement and concern over competition between the former President of the European Council Van Rompuy and the former Commission President Barroso due to the vague language