Mark Warner was interviewed by CBC News about the the World Trade Organization Appellate Body decision involving U.S. countervailing duties on Canadian supercalendered paper and whether the global trading system is unravelling before our eyes? (April 30, 2020) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, DC and New York and has advised governments on trade policy and trade negotiations. Mr. Warner previously worked on trade and competition issues as counsel in the OECD Trade Directorate and represented the OECD Trade Directorate at meetings of the WTO Working Group on Trade and Competition and the Working Group on Trade and Investment. Mr. Warner was Legal Director of the Ontario Ministry of Economic Development & Trade led Ontario’s legal team in the CETA negotiations, provided advice on the design of the Green Energy Act and related WTO dispute settlement proceedings, advised on various NAFTA Chapter 11 investor-state arbitration, and on procurement issues in the Canada-U.S. Agreement on Government Procurement. He is co-author of a leading Canadian trade law treatise, has also published numerous articles and has been invited to speak at conferences around the world.