Secretary William Hague stated that, should the treaty be in force by the time of an incoming Conservative government, he would "not let matters rest there". However, on 14 June 2009 the shadow Business Secretary, Kenneth Clarke, said in an interview to the BBC that the Conservative Party would not reopen negotiations on the Lisbon Treaty if the Irish backed it in a new referendum. Constitutional policy Traditionally the Conservative Party has supported the uncodified constitution of the United Kingdom and its traditional Westminster system of politics. The party opposed many of Tony Blair's reforms, such as the removal of the hereditary peers, the incorporation of the European Convention on Human Rights into British law, and the 2009 creation of the Supreme Court of the United Kingdom, a function formerly carried out by the House of Lords. There was also a split on whether to introduce a British Bill of Rights that would replace the Human Rights Act 1998; David Cameron expressed support, but party grandee Ken Clarke described it as "xenophobic and legal nonsense". In 2019, the Conservatives' manifesto committed to a broad constitutional review in a line which read "after Brexit we also need to look at the broader aspects of our constitution: the relationship between the government, parliament and the courts". Following the party's significant election victory, it remains unclear what this may mean. Organisation Party structure The Conservative Party comprises the voluntary party, parliamentary party (sometimes called the political party) and the professional party. Members of the public join the party by becoming part of a local constituency Conservative Association. The country is also divided into regions, with each region containing a number of areas, both having a similar structure to constituency associations. The National Conservative Convention sets the voluntary party's direction. It is composed of all association chairs, officers from areas and regions, and 42 representatives and the Conservative Women's Organisation. The Convention meets twice a year. Its Annual General Meeting is usually held at Spring Forum, with another meeting usually held at the Conservative Party Conference. In the organisation of the Conservative Party, constituency associations dominate selection of local candidates, and some associations have organised open parliamentary primaries. The 1922 Committee consists of backbench MPs, meeting weekly while parliament is sitting. Frontbench MPs have an open invitation to attend. The 1922 Committee plays a crucial role in the selection of party leaders. All Conservative