Leader of the Government in the House of Commons (Canada) position of Government House Leader was formally recognized. In 1968, Prime Minister Pierre Trudeau designated the Government House Leader as President of the Queen's Privy Council for Canada. Under Prime Minister Brian Mulroney, the roles of Government House Leader and President of the Privy Council were separated in 1989. Under Mulroney and his successors, the position of House Leader would often be held by someone who was named a Minister of State without any portfolio responsibilities specified. Since 2003, this Minister of State status has been obscured in all but the most official circumstances by the use of a "Leader
Brian Mulroney on Diefenbaker's leadership. Diefenbaker had reached his 70th birthday in 1965. Mulroney joined with most of his generation in supporting Camp and opposing Diefenbaker, but due to his past friendship with Diefenbaker, he attempted to stay out of the spotlight. With Camp's narrow victory, Diefenbaker called for a 1967 leadership convention in Toronto. Mulroney joined with Joe Clark and others in supporting former Justice minister E. Davie Fulton. Once Fulton dropped off the ballot, Mulroney helped in swinging most of his organization over to Robert Stanfield, who won. Mulroney, then 28, would soon become a chief adviser to the new