He was sworn in on January 5, 2015. Cuéllar was elected to the American Law Institute (ALI) in 2008 and was elected to the ALI Council in 2014. He has worked on several ALI projects, including Model Penal Code: Sentencing, Principles of Government Ethics, and Restatement Fourth, The Foreign Relations Law of the United States. In July 2010, President Barack Obama appointed Cuéllar to the Council of the nonpartisan U.S. Administrative Conference, an independent agency dedicated to improving the efficiency and fairness of federal administrative procedures. From 2010 until his appointment to the judiciary in 2015, he also served on the Board of Directors of The Constitution Project, a bipartisan non-profit organization that builds consensus on constitutional issues affecting the rule of law and criminal justice. Beginning in 2004, Cuéllar held several leadership positions at Stanford University. In addition to serving as Director of the Freeman Spogli Institute and leading CISAC, he led the Stanford Cyber Initiative, and earlier, the Honors Program in International Security Studies. He currently serves as Chair of the Board of Directors of the Center for Advanced Study in the Behavioral Sciences. He also chairs the advisory boards of the AI Now Institute at New York University and the Seed Initiative at the Stanford Graduate School of Business. He was Stanford University’s principal commencement speaker in 2017. On February 10, 2019, he was elected to the Harvard Corporation (the President and Fellows of Harvard College). Cuéllar is married to United States District Judge Lucy H. Koh of the Northern District of California, and they have two children. They live in Northern California.