Deputy Secretary of Agriculture, U.S. Department of Agriculture
Judge Stephen Alexander Vaden was appointed as the Deputy Secretary of the U.S. Department of Agriculture on July 7, 2025. Alongside 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 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.
Laurence H. Silberman Chair in Constitutional Governance and Senior Fellow, American Enterprise Institute; Co-Director, Antonin Scalia Law School’s C. Boyden Gray Center for the Study of the Administrative State
Adam J. White is the Laurence H. Silberman Chair in Constitutional Governance and senior fellow at the American Enterprise Institute, where he focuses on the Supreme Court and the administrative state. Concurrently, he codirects the Antonin Scalia Law School’s C. Boyden Gray Center for the Study of the Administrative State.
Mr. White practiced constitutional and administrative law, particularly in the regulation of energy and financial markets. He started his legal career as a law clerk for Judge David B. Sentelle at the US Court of Appeals for the DC Circuit.
Mr. White has written for the Wall Street Journal, the New York Times, the Washington Post, National Affairs, Commentary, Harvard Journal of Law & Public Policy, and Notre Dame Law Review, among other publications. He is a regular contributor to the Yale Journal on Regulation’s Notice and Comment blog, and for many years, he was one of the Weekly Standard’s lead writers on constitutional law and the Supreme Court.
Mr. White has testified often before Congress, including before the Senate’s Committees on the Judiciary; Commerce, Science, and Transportation; and Homeland Security and Governmental Affairs and before the House’s Judiciary and Financial Services Committees. In 2018, the Senate Committee on the Judiciary called him to testify in Brett Kavanaugh’s Supreme Court confirmation hearings to advise senators on Kavanaugh’s approach to administrative law.
In 2021, he served on the Presidential Commission on the Supreme Court of the United States, where he criticized “Court packing” and other efforts to restructure the Supreme Court. In 2017, he was appointed to serve on the Administrative Conference of the United States. He also serves on the leadership council for the American Bar Association’s Administrative Law and Regulatory Practice Section, which he will chair in 2023–24. Before joining AEI, he was a research fellow at Stanford University’s Hoover Institution and an adjunct fellow at the Manhattan Institute.
Mr. White has a JD from Harvard Law School and a bachelor of business administration from the College of Business at the University of Iowa.
Assistant Attorney General, Civil Division, United States Department of Justice
Brett A. Shumate was sworn in as the Civil Division’s 36th Assistant Attorney General on June 11, 2025. He previously served in the Civil Division from 2017 to 2019 as the Deputy Assistant Attorney General for the Federal Programs Branch. Prior to rejoining the Department, Mr. Shumate was a partner at Jones Day in Washington, D.C.
Mr. Shumate clerked for Judge Edith H. Jones on the United States Court of Appeals for the Fifth Circuit. He graduated from Wake Forest University School of Law and Furman University.
Columnist, The Hill
Merrill Matthews, Ph.D., was for 25 years a resident scholar with the Institute for Policy Innovation. Prior to that he was Vice President of Domestic Policy at the National Center for Policy Analysis. He is a public policy analyst specializing in health care, entitlements and energy issues and is the author of numerous public policy studies. He is past president of the Health Economics Roundtable for the National Association for Business Economics, the largest trade association of business economists.
For nine years Dr. Matthews was executive director of the Washington, DC-based Council for Affordable Health Insurance, a health insurance trade association. While he was executive director, National Journal recognized the Council as one of the most effective health policy organizations in Washington.
Dr. Matthews served for 10 years as a medical ethicist for the University of Texas Southwestern Medical Center’s Institutional Review Board for Human Experimentation. He is the co-author of On the Edge: America Faces the Entitlements Cliff (2019) and has contributed chapters to several books, including Physician Assisted Suicide: Expanding the Debate, The 21st Century Health Care Leader and, in 2009, Stop Paying the Crooks (on Medicare fraud). And for several years he co-authored a column on dental ethics for the Texas Dental Journal.
For several years he also served as chairman on the Texas Advisory Committee of the U.S. Commission on Civil Rights.
He is currently a weekly columnist for The Hill and has been published in numerous journals and newspapers, including the Wall Street Journal, the New York Times, Forbes, USA Today and the Washington Times.
Matthews is a frequent guest host on Point of View radio talk show, which airs nationwide. He was an award-winning political analyst for the USA Radio Network, and for several years had a daily one-minute commentary on Sirius-XM Radio. In 2008 and again in 2014, the BBC featured him in a television program on welfare reform in Great Britain, specifically Wales.
Dr. Matthews received a BBA in Economics from the University of Texas at Arlington, an M.Div. from Southwestern Baptist Theological Seminary, and has a Ph.D. in Humanities from the University of Texas at Dallas. And he is an 8th degree black belt in Tae Kwon Do.
Assistant Attorney General, Civil Division, United States Department of Justice
Brett A. Shumate was sworn in as the Civil Division’s 36th Assistant Attorney General on June 11, 2025. He previously served in the Civil Division from 2017 to 2019 as the Deputy Assistant Attorney General for the Federal Programs Branch. Prior to rejoining the Department, Mr. Shumate was a partner at Jones Day in Washington, D.C.
Mr. Shumate clerked for Judge Edith H. Jones on the United States Court of Appeals for the Fifth Circuit. He graduated from Wake Forest University School of Law and Furman University.
Laurence H. Silberman Chair in Constitutional Governance and Senior Fellow, American Enterprise Institute; Co-Director, Antonin Scalia Law School’s C. Boyden Gray Center for the Study of the Administrative State
Adam J. White is the Laurence H. Silberman Chair in Constitutional Governance and senior fellow at the American Enterprise Institute, where he focuses on the Supreme Court and the administrative state. Concurrently, he codirects the Antonin Scalia Law School’s C. Boyden Gray Center for the Study of the Administrative State.
Mr. White practiced constitutional and administrative law, particularly in the regulation of energy and financial markets. He started his legal career as a law clerk for Judge David B. Sentelle at the US Court of Appeals for the DC Circuit.
Mr. White has written for the Wall Street Journal, the New York Times, the Washington Post, National Affairs, Commentary, Harvard Journal of Law & Public Policy, and Notre Dame Law Review, among other publications. He is a regular contributor to the Yale Journal on Regulation’s Notice and Comment blog, and for many years, he was one of the Weekly Standard’s lead writers on constitutional law and the Supreme Court.
Mr. White has testified often before Congress, including before the Senate’s Committees on the Judiciary; Commerce, Science, and Transportation; and Homeland Security and Governmental Affairs and before the House’s Judiciary and Financial Services Committees. In 2018, the Senate Committee on the Judiciary called him to testify in Brett Kavanaugh’s Supreme Court confirmation hearings to advise senators on Kavanaugh’s approach to administrative law.
In 2021, he served on the Presidential Commission on the Supreme Court of the United States, where he criticized “Court packing” and other efforts to restructure the Supreme Court. In 2017, he was appointed to serve on the Administrative Conference of the United States. He also serves on the leadership council for the American Bar Association’s Administrative Law and Regulatory Practice Section, which he will chair in 2023–24. Before joining AEI, he was a research fellow at Stanford University’s Hoover Institution and an adjunct fellow at the Manhattan Institute.
Mr. White has a JD from Harvard Law School and a bachelor of business administration from the College of Business at the University of Iowa.
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