Danuta Hübner, Poland's first-ever European Commissioner, is one of her country's foremost economists and policymakers and has played a key role in the enlargement of the EU. Since July 2009, Ms. Hübner is a Member of the European Parliament. Currently she is the Chair of the Committee on Constitutional Affairs as well as member of the Committee on Economic and Monetary Affairs and the Delegation for relations with the United States. She was also a member of the two successive Special Committees on Tax Rulings and Other Measures Similar in Nature or Effect from February 2015 to July 2016. In addition she is a substitute member of the Parliament's Committee on International Trade, the Delegation to the EU-Mexico Joint Parliamentary Committee and the Delegation to the Euro-Latin American Parliamentary Assembly. In 2004, Professor Hübner was entrusted as European Commissioner with the trade, then the regional policy portfolio. Earlier, during the past decade, her roles in Poland's Government have included Minister for European Affairs, Head of Office of the Committee for European Integration and Secretary of State for Poland's Ministry of Foreign Affairs, Deputy Minister for Industry and Trade and Minister Head of the Chancellery of the President of the Republic of Poland. In 2000-2001, Professor Hübner was Under-Secretary-General of the UN and Executive Secretary at the United Nations Economic Commission for Europe in Geneva. She studied at the Warsaw School of Economics where she obtained an MSc (1971) and a PhD (1974). In 1988-1990, Professor Hübner was a Fulbright scholar at the University of California, Berkeley. In 1992, she was conferred with the scientific title of Professor of Economics by the President of the Republic of Poland. She has been awarded with five doctorates honoris causa by European universities.

Sophie Meunier is Senior Research Scholar at the Princeton School of Public and International Affairs, Princeton University. She is Director of the Program in Contemporary European Politics and Society, Co-Director of the EU Program at Princeton, and Acting Director of the Liechtenstein Institute on Self-Determination 2023-2024). She is the author of Trading Voices: The European Union in International Commercial Negotiations (Princeton University Press, 2005) and The French Challenge: Adapting to Globalization (Brookings Institution Press, 2001), winner of the 2002 France-Ameriques book award. She is also co-editor of several books on Europe and globalization, most recently Developments in French Politics 6 (Palgrave MacMillan 2020) and Speaking with a Single Voice: The EU as an Effective Actor in Global Governance? (Routledge, 2015). Meunier is Chair of the European Union Studies Association (2023-2024). Her current work deals with the politics of investment screening mechanisms and the European Union's recent geoeconomic turn, including as part of the PRISM project and the Beauty Contests grant. She was made Chevalier des Palmes Academiques by the French Government.