Professor Claussen’s primary scholarly interests include international law, especially trade, investment, international business and labor; dispute settlement and procedure; national security and cybersecurity law; and, administrative law issues surrounding U.S. foreign relations.

Her work has appeared or is forthcoming 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. Professor Claussen has also blogged at Lawfare, Just Security, the International Economic Law & Policy Blog, and Opinio Juris, 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.

Professor Claussen has served as an invited researcher or fellow at numerous institutions around the world, including the University of Cambridge Lauterpacht Centre for International Law where she was a Brandon Fellow, the iCourts Center of Excellence at the University of Copenhagen, the George C. Marshall Center for Security Studies, and the World Trade Institute. In fall 2021, she is a visiting lecturer at the Graduate Institute of International and Development Studies in Geneva and a distinguished guest professor at the University of Zurich. She is also a non-resident Senior Fellow at the Georgetown Institute of International Economic Law.

Professor Claussen holds several leadership positions within international law and arbitration professional associations. Among other activities, she is co-chair of the American Society of International Law (ASIL) International Economic Law Interest Group, a member of the ASIL Executive Council & Executive Committee, co-chair of the Junior International Law Scholars Association, and a member of the Academic Council of the Institute for Transnational Arbitration. She is one of three experts recruited by the Administrative Conference of the United States to study alternative dispute resolution in federal agency programs. In 2021, she was appointed co-Editor-in-Chief of the Journal of International Economic Law.

Immediately prior to joining the Miami Law faculty in 2017, Professor Claussen was Associate General Counsel at the Office of the U.S. Trade Representative in the Executive Office of the President. There, she represented the United States in trade dispute proceedings and served as a legal advisor for the United States in international trade negotiations. She also worked on economic security issues on behalf of USTR at the National Cyber Investigative Joint Task Force.

Earlier in her career, Professor Claussen was Legal Counsel at the Permanent Court of Arbitration in The Hague where she advised on disputes between countries, and on investment and commercial arbitrations involving countries and international organizations. She also served as a law clerk to the Honorable David F. Hamilton of the U.S. Court of Appeals for the Seventh Circuit. At Yale, Professor Claussen served on the board of the Yale Law Journal and was Editor-in-Chief of the Yale Journal of International Law. She was awarded the Jerome Sayles Hess Fund Prize for excellence in international law and the Howard M. Holtzmann Fellowship in international dispute resolution.