Justice Mariano-Florentino Cuéllar began serving on the Supreme Court of California in January 2015. Previously, he was the Stanley Morrison Professor of Law, Professor (by courtesy) of Political Science, and Director of Stanford’s Freeman Spogli Institute for International Studies at Stanford University. A fellow of the American Academy of Arts and Sciences, Cuéllar is a scholar of public law and institutions whose books and articles explore problems in administrative law and legislation, cyberlaw, criminal justice, public health law, international security, immigration, and the history of institutions.
In the federal government, Justice Cuéllar served as Special Assistant to the President for Justice and Regulatory Policy at the White House (2009-2010), where he led the Domestic Policy Council staff responsible for civil and criminal justice, public health law and policy, and immigration. He also led the Presidential Transition Task Force on Immigration (2008-2009) and co-chaired the U.S. Department of Education’s Equity and Excellence Commission (2011-2013). He serves on the boards of Harvard University and the Hewlett Foundation, and chairs the boards of the Center for Advanced Study in the Behavioral Sciences, AI Now, and Stanford Seed. In addition to serving on the American Law Institute Council, he chairs the Institute’s Early Career Scholar Medal Committee and has served as an Adviser for projects on Principles of Law: Police Investigations, and Sexual and Gender-Based Misconduct on Campus: Procedural Frameworks and Analysis. Within the California judiciary, he led the statewide Language Access Implementation Task Force.
A naturalized U.S. citizen born in northern Mexico, he is a graduate of Harvard, Stanford, and Yale Law School. He began his legal career at the U.S. Treasury Department and clerked for Chief Judge Mary Schroeder of the U.S. Court of Appeals for the Ninth Circuit.