With Macdonald, Roderick, 'Citizen Federalism,' in Mendelsohn, Matthew, Joshua Hjartarson and James Pearce, eds, State of the Federation, 2010: Shifting Power, the New Ontario and What It Means for Canada (Montreal and Kingtson: McGill-Queen's University Press, 2013), 165-184
'Canada’s Adventures in Clubland: Trade Clubs and Political Influence' in Daudelin, Jean and Daniel Schwanen, eds, Canada among Nations 2007: Room for Manoeuvre (Montreal and Kingston: McGill-Queen's University Press, 2008), 181-97.
“Multiple trade negotiations offer tantalizing possibilities” Globe and Mail December 27, 2013
“WTO’s Bali ministerial meeting holds fate of Doha Round in its hands” Globe and Mail, November 27, 2013
“Trade deals should not be held hostage by dairy supply management fears” Globe and Mail, November 7 2013
with Michael Gifford, Alex McCalla, and Karl Meilke (2008) 'Success of Trade Talks Is Crucial for Canada,' The Toronto Star, March 30, 2008, p.A15. (also published in the Globe and Mail online as Meilke et al, "Doha is not Dead", March 30, 2008.)
"The system works - leave it alone," National Post (12 January 2005), FP19
“Face it: We're separate from Uncle Sam” Globe and Mail web only (June 17, 2004)
with Peter Phillips, "Read the Fine Print on GMO Labels," Globe and Mail, (September 3, 2003)
“Restoring Frayed Links with U.S.,” The Toronto Star, (April 25, 2003) A31.
With Matthew Mendelsohn, "Can't live with it, can't live without it," Globe and Mail (January 31, 2001), A15.