Mark Warner Was Featured on Global News About President Trump’s Threatened Section 338 Tariffs on Certain Canadian Exports to the U.S.

Mark Warner was featured on Global News cameo appearance talking about Trump’s new threatened Section 338 tariffs of up to 50% on certain Canadian exports and the risks of “tit for tat” retaliation. (July 21, 2026) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, New York and Brussels and has advised governments on trade policy and trade negotiations. Mark also previously worked on trade and competition issues as counsel in the OECD Trade Directorate where he participated in the negotiations of the Multilateral Agreement on Investment and represented the OECD at meetings of the WTO Working Group on Trade and Competition Policy and the Working Group on Trade and Investment.

As Legal Director of the Ontario Ministry of Economic Development & Trade, Mark led Ontario’s legal team for trade negotiations (including the Canada-EU Trade Agreement and the U.S. Agreement on Government Procurement), advised on trade disputes (including the Green Energy Act and softwood lumber) and various NAFTA Chapter 11 investor-state arbitration matters. He also led the Ontario’s legal team for the insolvency / restructuring of General Motors and Chrysler, and various grant and loan agreements to leading automotive and automotive parts companies, including to electric car battery manufacturer, Electrovaya and a Better Place demonstration centre and electric vehicle charging station network, and more recently has assisted with an electrical vehicle battery manufacturing contractual dispute.

As Legal Director for the Ontario Ministry of Research & Innovation, Mr. Warner led Ontario’s legal team in creating the $250 million Ontario Emerging Technologies Fund, the $205 million Ontario Venture Capital Fund focused, in part, on the digital media and information and communications technology sectors. Mark’s experience with online technologies and e-commerce includes: participating in OECD-wide policy work on laws and regulations affecting e-commerce, acting as Chair, ICC Competition Commission Working Party on E-Commerce and Competition Policy, serving as an original ICANN domain name dispute resolution arbitrator for eResolution and WIPO and as Rapporteur of the Hague Conference on Private International Law Commission on Jurisdiction for Torts in Electronic Commerce.