Mariano-Florentino (Tino) Cuéllar—a law professor and public servant with broad experience in international and domestic policy, the justice system, education, and philanthropy—is the president of the Carnegie Endowment for International Peace. A scholar of transnational regulatory and security problems, American institutions, and technology’s impact on law and government, he previously served as a justice on the Supreme Court of California, the highest court of America’s largest judiciary. He is the first Mexican immigrant ever to serve in this capacity. Previously, he was the Stanley Morrison Professor at Stanford Law School and director of Stanford University’s Freeman Spogli Institute for International Studies. He served two U.S. presidents in a variety of roles in the federal government, including as special assistant to the president for justice and regulatory policy in the Obama administration.