John Milloy has had an extensive career in public policy and government at both the national and provincial levels. A graduate of Carleton University, the London School of Economics and Oxford University, John has served as a senior advisor to a number of leading politicians including the former Minister of Industry, the Hon. John Manley and the former Minister of Intergovernmental Affairs, the Hon. Stéphane Dion. In 1997, he joined the senior staff of Prime Minister Jean Chrétien, where he served as Legislative Assistant.

Following the announcement of Prime Minister Chrétien's retirement in 2002, John moved back to his hometown of Kitchener where, building upon his interest and background in international affairs and history, he became the first Director of Public Affairs at the Centre for International Governance Innovation. His first book, The North Atlantic Treaty Organization, 1948-1957: Community or Alliance, examines attempts by NATO's early leaders to develop its non-military potential.

In 2003, John was elected as the Member of Provincial Parliament for the constituency of Kitchener Centre. He also serves as Parliamentary Assistant to the Minister of Intergovernmental Affairs.