Mark Warner was interviewed on 580 CFRA in Ottawa about possible WTO and USMCA legal challenges by Canada to President Trump’s tariffs on imported goods from Canada, prospects for success, defenses, appeals, retaliation and the rules-based international order. (March 5, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was interviewed on CTV’s Your Morning about possible WTO and USMCA legal challenges by Canada to President Trump’s tariffs on imported goods from Canada, prospects for success, defenses, appeals, retaliation and the rules-based international order. (March 5, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was interviewed on Newstalk 1010 in Toronto Round One panel about President Trump’s 25% tariffs on imported goods from Canada going into effect, Canada’s retaliation, and the tone and substance of retaliation by the governments of Canada and Ontario. (March 5, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was interviewed on Newstalk1010 in Toronto about President Trump’s 25% tariffs on imported goods from Canada going into effect, Canada’s retaliation and possible off-ramps to a full-blown trade war. (Begins at 20:42). (March 4, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

[Begins at 20:42]

Mark Warner was interviewed on BNNBloomberg about Canada’s options  to negotiate out of a trade war with the U.S. over President Trump’s announced and threatened tariffs on imported Canadian goods. (March 4, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was interviewed on CBC News about the likelihood of Trump’s paused 25% tariffs on imports of Canadian goods and 10% on Canadian energy imports going back into effect or whether Canada has made enough progress on migration and fentanyl trade to forestall that. (March 3, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was featured in the Wall Street Journal talking about the risks of the Canadian Radio-television and Telecommunications Commission’s decision slap a levy on Google to help finance enforcement costs related to Canada’s online-news law in light of Trump’s threatened tariff and tax responses against discriminatory digital taxes. (February 26, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. Mark advised on harmful tax competition issues and worked on other 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 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. As Legal Director of MEDT, Mark also provided strategic legal advice with respect to the Ontario’s economic development, research and innovation grants and loans to leading ICT and digital media companies. 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. Mark also chaired an Insight Research Canadian Sharing Economy Symposium in Toronto in 2015.

As Legal Director of the Ontario Ministry of Economic Development & Trade, Mark led Ontario’s legal team for the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was featured in The Hill Times talking about Canada’s dispute settlement options to respond to Trump’s various tariff threats, the likelihood of success, appeals and unintended consequences from any similar unilateral retaliation outside of the trade rules. (February 26, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was featured in the Financial Post about Trump’s threatened reciprocal tariffs, Canada’s GST (VAT) and how this fits into other past and current trade irritants and disputes with the U.S., including over the digital services tax. (February15, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. Mark advised on harmful tax competition issues and worked on other trade and competition issues, participated in the negotiations of the proposed 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 the negotiation of the Canada-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. As Legal Director of MEDT, Mark also provided strategic legal advice with respect to the Ontario’s economic development, research and innovation grants and loans to leading ICT and digital media companies. 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. Mark also chaired an Insight Research Canadian Sharing Economy Symposium in Toronto in 2015.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.

Mark Warner was featured in a CBC Radio Bizdigest report talking about U.S. President Trump’s reciprocal tariff threat, how that could impact Canada and how it fits into his other tariff threats to Canadian exports. (February 14, 2025) Mr. Warner is a Canadian and U.S. lawyer who has practiced in Toronto, Washington, D.C., New York and Brussels. 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 the negotiation of the Canada-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.

Mark is a past Chair of the International and Economics Committees of the American Bar Association Section of Antitrust Law as well as a member of the Section’s Task Forces on Competition Policy and NAFTA and Antitrust in the Global Economy. In addition to being a lawyer, Mr. Warner has a Masters Degree in Economics from the University of Toronto.