Jack is the Executive Vice-President of the Association for Canadian Studies and the Canadian Institute for Identities and Migration. Holding a Ph.D. in Canadian History from Concordia University, he taught at Université du Québec à Montréal and McGill University. He taught courses on the history of immigration in Quebec, on ethnic minorities in Quebec, on official language minorities in Canada and on sport in Canada. He also wrote essays for books, journals and newspapers across the country, in addition to being the author of various publications and government reports on issues of immigration, multiculturalism, human rights and official languages.