Mariano-Florentino Cuéllar

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Mariano-Florentino (Tino) Cuéllar is an Associate Justice of the Supreme Court of California.  He was previously a member of the ACUS Council and the Director and Senior Fellow of the Freeman Spogli Institute for International Studies and the Stanley Morrison Professor of Law & (by courtesy) Political Science at Stanford University.  His teaching and research focus on administrative law and how organizations manage public health and safety, immigration, and international security problems. During 2009 – 2010, he was on leave from Stanford to serve as Special Assistant to the President for Justice and Regulatory Policy at the White House Domestic Policy Council, with responsibility for public health and safety, regulatory reform, civil rights, and immigration. Before joining the Stanford faculty in 2001, he served for several years as Senior Advisor to the U.S. Treasury Department’s Under Secretary for Enforcement. While at Treasury, he worked on countering financial crime, improving border coordination, and enhancing anti-corruption measures. He has served on the Department of Education’s Equity and Excellence Commission and the Silicon Valley Blue Ribbon Task Force on Aviation Security.  He is also on the board of directors of the American Bar Foundation and the Constitution Project, a nonprofit think-tank that builds bipartisan consensus on constitutional and legal issues.

A member of the American Law Institute and the Council on Foreign Relations, he received a Ph.D. in political science from Stanford University, a J.D. from Yale Law School, and an A.B. magna cum laude from Harvard University.  He clerked for Chief Judge Mary M. Schroeder of the U.S. Court of Appeals for the Ninth Circuit.


  • Associate Justice, Supreme Court of California
  • Council Member, Administrative Conference of the United States