Brian Mulroney supporting the merger at a time when former PC leaders Joe Clark, Jean Charest and Kim Campbell either opposed it or expressed ambivalence. Military historians Norman Hillmer and J.L. Granatstein ranked Mulroney eighth among Canada's prime ministers in their 1999 book "Prime Ministers: Ranking Canada's Leaders". On March 31, 2009 it was reported by various news outlets that a Conservative official claimed Mulroney was no longer a member of the party. They claimed his membership expired in 2006 and was not renewed. Additionally, Mulroney allegedly "called a senior party official two months ago to ask that his name be pulled
The Secret Mulroney Tapes under the title . It has been suggested by some media outlets that Newman released his book before Mulroney could get his own edited and sanitized version of events out. After the publication of the book, Jean Charest, a former Cabinet minister under Mulroney and former premier of Quebec, came to his defence in a press conference, saying that he agreed with the statement that "Nobody has achievements like this ... you cannot name a Canadian prime minister who has done as many significant things as I did, because there are none." Charest pointed out that Mulroney was the father