On April 24 at 3 p.m. EDT, the Law Library of Congress and the American Bar Association will cohost our annual Law Day celebration with a Zoom-based panel discussion.
Please register here.
This year, the American Bar Association’s 2025 Law Day theme is “The Constitution’s Promise: Out of Many, One.” As the American Bar Association explains:
The Constitution enshrines our collective responsibility to one another, and the 2025 Law Day theme urges us to take pride in a Constitution that bridges our differences to bring us together as a united nation. Our civic lives tie us together as one “We,” whether through legislative efforts that serve the common good, through military service, or by working together, every day, to fulfill the promise of E pluribus unum, or “out of many, one.”
This panel discussion will explore how law, specifically constitutionalism, has been used to promote unity in nations around the world, exploring this theme from a comparative constitutional law framework, where we will explore the intricacies of constitutional design, focusing on how different nations create, revise, and enforce their constitutions. This program will examine the processes by which constitutions are drafted, highlighting the roles of founding documents, legal frameworks, and the negotiation processes that reflect a nation’s values and aspirations. The panel will discuss how constitutions evolve over time, whether through formal amendments, judicial interpretation, or societal shifts, and how these changes impact governance. The enforcement mechanisms that ensure constitutions remain a living document—through judicial review, political processes, and institutional checks—will also be critically analyzed, providing a deeper understanding of the balance between legal stability and necessary reform. Through this comparative lens, this program will shed light on the diverse approaches to constitutional governance across the globe.
The program will be introduced by the American Bar Association National Law Day Chair Tommy Preston and the Law Librarian of Congress Aslihan Bulut.
The moderator is Dr. Alejandro Ponce. Dr. Ponce is the Executive Director of the World Justice Project (WJP), leading its global efforts to advance the rule of law through research, data-driven insights, and strategic initiatives.
Dr. Ponce, a trained economist, has been instrumental in shaping WJP’s research agenda since its early years. As Chief Research Officer (2012–2025), he played a key role in developing the WJP Rule of Law Index and led the creation of major data products, including country and thematic diagnostics, environmental rule of law indicators, legal needs surveys in over 100 countries, and the first study to quantify the global justice gap. He also led WJP’s expansion in Mexico and the European Union, launching subnational justice indicators, advancing criminal justice research, and overseeing documentary film productions.
Before joining the World Justice Project, Ponce worked as a researcher at Yale University and as an economist at the World Bank and the Mexican Banking and Securities Commission. He has conducted research in the areas of behavioral economics, financial inclusion, justice indicators, and the rule of law, and has been published in collected volumes as well as top academic journals such as the American Economic Review and the Journal of Law and Economics. Ponce is a frequent speaker on the rule of law at international conferences and policy forums and travels the world to help a wide variety of stakeholders turn rule of law data into action. He holds a B.A. in economics from ITAM in Mexico and an M.A. and Ph.D. in economics from Stanford University.
The panelists include:
Law Library of Congress Senior Foreign Law Specialist Tariq Ahmad. Tariq’s work at the Law Library of Congress covers mostly South Asian common law jurisdictions, particularly India and Pakistan. He takes a particular research interest in religion and law issues in the South Asia region. Tariq holds an LL.M. degree in international law from American University Washington College of Law and an LL.B. from University College London.
Dr. Zachary Elkins. Professor Elkins’ research focuses on issues of democracy, institutional reform, research methods, and national identity, with an emphasis on cases in Latin America. He is currently completing a book manuscript, “Steal this Constitution: The Drift and Mastery of Constitutional Design,” which examines the design and diffusion of democratic institutions. Much of his research is on the origins and consequences of national constitutions. With Tom Ginsburg (University of Chicago), Professor Elkins co-directs both the Comparative Constitutions Project, an NSF-funded initiative to understand the causes and consequences of constitutional choices, and the website Constitute, which provides resources and analysis for constitutional drafters in new democracies. Elkins earned his B.A. from Yale University, an M.A. from the University of Texas at Austin, and his Ph.D. from the University of California, Berkeley.
Professor Mortimer Sellers. M.N.S. Sellers is Regents Professor of the University System of Maryland, the highest honor in the Maryland Academic System. He is also Director of the University of Baltimore Center for International and Comparative Law (CICL), honorary President of the International Association for the Philosophy of Law and Social Philosophy (IVR), President-Elect of the American Society of Comparative Law, Director of Studies of the American Branch of the International Law
Association and Counsellor to the American Society of International Law.
Professor Sellers has written and edited seventeen books and innumerable articles on international law, comparative law, constitutional law, the philosophy of law, and legal history. He is the general editor of several book series, including the Cambridge University Press series ASCL Studies in Comparative Law (with David Gerber) and the Cambridge University Press series ASIL Studies in International Legal Theory (with Michael Cooper). He is the editor with Stephan Kirste of The IVR Encyclopedia of the Philosophy of Law and Social Philosophy, and with Gary Bell of the second edition of the International Encyclopedia of Comparative Law.
Professor Sellers received his doctorate and civil law degrees from Oxford University, where he was a Rhodes Scholar and T.H. Green Fellow. He received his bachelor’s degree (summa cum laude) and law degree (cum laude) at Harvard University, where he was a Frank Knox Fellow and John Harvard Scholar and received the Edwards Whitaker and Detur prizes. He is an elected member of the International Academy of Comparative Law and of the International Association of Constitutional Law. Professor Sellers has been The H.L.A. Hart Fellow in Jurisprudence at University College, Oxford, Research Fellow of the Max Planck Institute for Comparative Public Law and International Law in Heidelberg, and a visiting professor at the Lauterpacht Research Centre of Cambridge University, Erasmus University Rotterdam, Georgetown University, and the Hague Academy of International Law.
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