Caroline Mulroney 12 years until 2005 when she returned to Canada, worked in financial services and became involved in charitable work. She also served on the board of directors of the Windsor–Detroit Bridge Authority. Mulroney is the only daughter and eldest child of the 18th Prime Minister of Canada, Brian Mulroney, and his wife Mila Mulroney. She is also a naturalized citizen of the United States. Mulroney is the eldest of four children and only daughter of former Prime Minister of Canada Brian Mulroney and his wife, Mila. One of her younger brothers is CTV morning host Ben Mulroney. Her father won
Deputy Prime Minister of Australia leader of the Country Party (subsequently the National Party). That continues to be case when the Coalition is in government. In the case of Labor governments, the party's deputy leader was and continues to be the Deputy Prime Minister. On 19 December 1967, John McEwen, the long-serving leader of the Country Party in the Coalition government, was sworn in as interim Prime Minister following the sudden death in office of Prime Minister Harold Holt. (There was discussion that deputy Liberal leader and Treasurer William McMahon should assume the office. McMahon had planned a party room meeting on 20 December to