He is the author of Bilingual Today, United Tomorrow: Official Languages in Education and Canadian Federalism and co-editor of Mobilizations, Protests and Engagements: Canadian Perspectives on Social Movements and Contemporary Quebec: Selected Readings and Commentaries, as well as many scholarly articles and book chapters on issues related to political history, Canadian language policies, English-French relations, national identity, federalism, commemorations and Canada Day celebrations. He was the founding chair of the Canadian Historical Association's Political History Group and has served on the editorial boards of the Canadian Historical Review, the Journal of the Canadian Historical Association and the Journal of Canadian Studies. He is currently the series editor for Oxford University Press Canada's "Living History" Canadian history book series.