Ep. 7 – WITA’s Friday Exchange: Breaking Down the Legal Cases Against the Trump Tariffs

Ep. 7 – WITA’s Friday Exchange: Breaking Down the Legal Cases Against the Trump Tariffs

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Former Trade Negotiators Discuss This Week’s Tariff and Trade Developments within trade law and IEEPA.

No one understands the dynamics with key U.S. trading partners better than the people who led these kinds of difficult trade negotiations for the United States. Panelists will update our viewers on the trade policy announcements, what remains undone; and what are expected next steps in these trade negotiations.

Featured Speakers

Kathleen Claussen

Professor of Law

Georgetown University Law Center

A leader in international economic law and procedure, Professor Kathleen Claussen has served as arbitrator, counsel, expert, public servant, and teacher. Her expertise covers several topics of international law, especially economic security, trade, investment, international business and labor; dispute settlement and international dispute bodies; and, administrative law issues surrounding U.S. foreign relations and transnational agreements. Professor Claussen has testified before the U.S. Congress, UK House of Lords, and European Parliament on topics related to U.S. tariff laws and executive power, on which she is a leading authority. In summer 2026, she is a visiting fellow at Campion Hall at the University of Oxford, and for the 2026-2027 academic year, she has been selected to be a Crane Fellow in Law and Public Policy at Princeton University, where she will continue her work as principal investigator of the Economic Agreements Research Network. Professor Claussen’s academic work has appeared in the Yale Law Journal, the Stanford Law Review, the Columbia Law Review, the University of Chicago Law Review, and the Virginia Law Review, among others, as well as in leading international law journals. One of her articles on international investment disputes, The International Claims Trade, was awarded the Smit-Lowenfeld Prize in International Arbitration. She also blogs at Lawfare, Just Security (where she is a member of the Editorial Board), and the International Economic Law & Policy Blog, and is regularly featured on or consulted as an expert for various media outlets such as the Wall Street Journal, Marketplace, Bloomberg, and the Financial Times.

Kathleen Claussen

Professor of Law

Georgetown University Law Center

A leader in international economic law and procedure, Professor Kathleen Claussen has served as arbitrator, counsel, expert, public servant, and teacher. Her expertise covers several topics of international law, especially economic security, trade, investment, international business and labor; dispute settlement and international dispute bodies; and, administrative law issues surrounding U.S. foreign relations and transnational agreements. Professor Claussen has testified before the U.S. Congress, UK House of Lords, and European Parliament on topics related to U.S. tariff laws and executive power, on which she is a leading authority. In summer 2026, she is a visiting fellow at Campion Hall at the University of Oxford, and for the 2026-2027 academic year, she has been selected to be a Crane Fellow in Law and Public Policy at Princeton University, where she will continue her work as principal investigator of the Economic Agreements Research Network. Professor Claussen’s academic work has appeared in the Yale Law Journal, the Stanford Law Review, the Columbia Law Review, the University of Chicago Law Review, and the Virginia Law Review, among others, as well as in leading international law journals. One of her articles on international investment disputes, The International Claims Trade, was awarded the Smit-Lowenfeld Prize in International Arbitration. She also blogs at Lawfare, Just Security (where she is a member of the Editorial Board), and the International Economic Law & Policy Blog, and is regularly featured on or consulted as an expert for various media outlets such as the Wall Street Journal, Marketplace, Bloomberg, and the Financial Times.

Peter Harrell

Visting Scholar; former Senior Director, International Economics, at the White House under President Biden

Georgetown Institute for International Economic Law

Peter E. Harrell is a Visiting Scholar at Georgetown’s Institute of International Economic Law. Harrell has had a diverse career across both the public and private sectors and currently serves as an attorney advising companies and investors on international legal, regulatory, and geopolitical risks, including economic sanctions and trade compliance matters. As a Visiting Scholar, Harrell’s research agenda focuses on the future of U.S. trade law and policy and the global trading order.

From January 2021 through 2022, Harrell served at the White House as Senior Director for International Economics, jointly appointed to the National Security Council and the National Economic Council. In that role, Harrell led White House initiatives to secure U.S. supply chains for critical products, worked on international digital and telecommunications policy and negotiations, served as the White House representative to the Committee on Foreign Investment in the United States, and led policy processes to impose sanctions and export controls on Russia in response to Russia’s invasion of Ukraine.

From 2015 to early 2021, Harrell was an attorney in private practice and served as Adjunct Senior Fellow at the Center for a New American Security. Harrell’s articles and essays have appeared in publications including the Fordham International Law Journal, the Journal of International Economic Law, the New York Times, the Wall Street Journal, Foreign Affairs, Foreign Policy, Politico, and Lawfare, among other outlets. Harrell has also testified in front of multiple congressional committees. He is also the host of a podcast, Security Economics.

Between 2009 and 2014, Harrell served at the U.S. State Department, first on the Policy Planning Staff and subsequently in the Department’s Bureau of Economic and Business Affairs. Earlier in his career, Harrell served on President Barack Obama’s 2008 campaign and as a reporter for Congressional Quarterly.

In addition to serving as a Visiting Scholar at the Institute of International Economic Law, Harrell is also a nonresident fellow at the Carnegie Endowment for International Peace. Harrell is a magna cum laude graduate of Princeton University and holds a JD from Yale Law School.

Peter Harrell

Visting Scholar; former Senior Director, International Economics, at the White House under President Biden

Georgetown Institute for International Economic Law

Peter E. Harrell is a Visiting Scholar at Georgetown’s Institute of International Economic Law. Harrell has had a diverse career across both the public and private sectors and currently serves as an attorney advising companies and investors on international legal, regulatory, and geopolitical risks, including economic sanctions and trade compliance matters. As a Visiting Scholar, Harrell’s research agenda focuses on the future of U.S. trade law and policy and the global trading order.

From January 2021 through 2022, Harrell served at the White House as Senior Director for International Economics, jointly appointed to the National Security Council and the National Economic Council. In that role, Harrell led White House initiatives to secure U.S. supply chains for critical products, worked on international digital and telecommunications policy and negotiations, served as the White House representative to the Committee on Foreign Investment in the United States, and led policy processes to impose sanctions and export controls on Russia in response to Russia’s invasion of Ukraine.

From 2015 to early 2021, Harrell was an attorney in private practice and served as Adjunct Senior Fellow at the Center for a New American Security. Harrell’s articles and essays have appeared in publications including the Fordham International Law Journal, the Journal of International Economic Law, the New York Times, the Wall Street Journal, Foreign Affairs, Foreign Policy, Politico, and Lawfare, among other outlets. Harrell has also testified in front of multiple congressional committees. He is also the host of a podcast, Security Economics.

Between 2009 and 2014, Harrell served at the U.S. State Department, first on the Policy Planning Staff and subsequently in the Department’s Bureau of Economic and Business Affairs. Earlier in his career, Harrell served on President Barack Obama’s 2008 campaign and as a reporter for Congressional Quarterly.

In addition to serving as a Visiting Scholar at the Institute of International Economic Law, Harrell is also a nonresident fellow at the Carnegie Endowment for International Peace. Harrell is a magna cum laude graduate of Princeton University and holds a JD from Yale Law School.

Marty Lederman

Professor from Practice

Georgetown University Law Center

Professor Lederman was Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel from 2009 to 2010, and an Attorney Advisor in OLC from 1994-2002. From 1988 to 2004, he was an attorney at Bredhoff & Kaiser, where his practice consisted principally of federal litigation, including appeals, on behalf of labor unions, employees and pension funds. In 2008, with David Barron, he published a two-part article in the Harvard Law Review examining Congress’s authority to regulate the Commander in Chief’s conduct of war.

Prior to rejoining the Department of Justice, he was a regular contributor to several blogs and web sites, including Balkinization, SCOTUSblog, Opinio Juris, and Slate, writing principally on issues relating to separation of powers, war powers, torture, detention, interrogation, international law, treaties, executive branch lawyering, statutory interpretation and the First Amendment. He served as law clerk to Chief Judge Jack B. Weinstein on the United States District Court for the Eastern District of New York, and to Judge Frank M. Coffin on the United States Court of Appeals for the First Circuit.

Marty Lederman

Professor from Practice

Georgetown University Law Center

Professor Lederman was Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel from 2009 to 2010, and an Attorney Advisor in OLC from 1994-2002. From 1988 to 2004, he was an attorney at Bredhoff & Kaiser, where his practice consisted principally of federal litigation, including appeals, on behalf of labor unions, employees and pension funds. In 2008, with David Barron, he published a two-part article in the Harvard Law Review examining Congress’s authority to regulate the Commander in Chief’s conduct of war.

Prior to rejoining the Department of Justice, he was a regular contributor to several blogs and web sites, including Balkinization, SCOTUSblog, Opinio Juris, and Slate, writing principally on issues relating to separation of powers, war powers, torture, detention, interrogation, international law, treaties, executive branch lawyering, statutory interpretation and the First Amendment. He served as law clerk to Chief Judge Jack B. Weinstein on the United States District Court for the Eastern District of New York, and to Judge Frank M. Coffin on the United States Court of Appeals for the First Circuit.

Michael Smart

Moderator

Trade Reporter

POLITICO Europe

FEATURED AUDIO

August 21, 2025

Breaking Down the Legal Cases Against the Trump Tariffs

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