Mark your calendars for March 17, 2026! Please join us for a special event focused on agricultural trade, presented by the Winthrop Rockefeller Distinguished Lecture Series (WRDLS). The lecture series is designed to engage students, faculty, industry professionals, and policymakers from across the state and region whose work intersects with agriculture, trade, and international affairs.
We’re excited to announce that this event will feature conversations with:

Keynote Speaker: Judge Stephen Alexander Vaden
Deputy Secretary of the U.S. Department of AgricultureAlongside Secretary Brooke L. Rollins, Deputy Secretary Vaden leads the Department’s operations and implements policies that support America’s food and farm systems. A native of Union City, Tennessee, Deputy Secretary Vaden brings expertise in agricultural policy, law, and rural development. Previously, he served as a judge on the U.S. Court of International Trade and as General Counsel of the USDA. Throughout Deputy Secretary Vaden’s time as General Counsel, he led successful Supreme Court litigation, advanced regulatory reform, and supported the implementation of the 2018 Farm Bill. He is a graduate of Yale Law School and Vanderbilt University. A public servant with strong agricultural roots, Deputy Secretary Vaden is committed to revitalizing rural America and ensuring an abundant, affordable, and safe U.S. food supply.

Ambassador Darci Vetter
Principal, Sower Strategies LLCAmbassador Vetter is a global public policy leader and trusted advisor working with companies, non-profits, and international organizations at the intersection of agriculture, sustainability, and international trade. Darci’s career spans more than two decades of policy leadership, including service as the Deputy U.S. Trade Representative for Agriculture and Under Secretary of Agriculture for Trade, and serving as the Head of Global Public Policy for PepsiCo and the Nature Conservancy.

Dr. Andrew Muhammad
Professor and Blasingame Chair of Excellence in Agricultural Policy in the Department of Agricultural and Resource Economics, University of Tennessee Institute of AgricultureDr. Muhammad brings considerable experience and research to the Blasingame Chair position, focusing on assisting decision-makers in evaluating opportunities, policies, and programs related to international trade. Dr. Muhammad previously served as the Associate Director at the Economic Research Service (ERS), an agency of the U.S. Department of Agriculture. He also served as Chief of the International Demand and Trade Branch at ERS, where he managed research, outreach, and data-related activities on international trade and policy. Dr. Muhammad has authored 90 refereed journal articles and more than 70 reports and other publications. He has also served as an investigator on funded research and outreach activities totaling over $6 million, including funding from the Gates Foundation, the National Institute of Food and Agriculture, and the National Science Foundation. His research focuses on agricultural trade, trade policy, and the economics of global food demand. He serves on several national advisory boards, including the Agricultural Policy Advisory Committee (APAC), which provides trade counsel to the Secretary of Agriculture and the U.S. Trade Representative.
We will announce additional speakers and full agenda details soon! We’re honored to host WRDLS once again, and we hope you’ll join us on Petit Jean Mountain for both days.
About WRDLS
Since its establishment in 1972, the Winthrop Rockefeller Distinguished Lecture Series (WRDLS) has brought preeminent speakers to University of Arkansas campuses to stimulate public discussion, inspire researchers and students, and provide insight on compelling topics. The lectures are free and open to the public. Most speakers interact with students before their public lecture and mingle with the audience afterward. Some of the past participants in the series include:
- Dr. Cornel West, Professor of Philosophy and Christian Practice at Union Theological Seminary
- Dr. Donald Berwick, former administrator, Centers for Medicare and Medicaid Services
- Julian Castro, former San Antonio mayor and former U.S. Secretary of Housing and Urban Development
- Jon Meacham, best-selling author and historian
- Robert Menchu, Nobel Peace Laureate
- Rebecca Skloot, author of The Immortal Life of Henrietta Lacks
- Dr. Neil deGrasse Tyson, Frederick P. Rose Director of the Hayden Planetarium at the American Museum of Natural History
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