Diego A. Zambrano is a Professor of Law at Stanford Law School. Zambrano’s primary research and teaching interests lie in the areas of civil procedure and comparative law. A central focus of his research is private enforcement—the distinctively American phenomenon of regulating major policy areas through private litigation rather than public agencies. Professor Zambrano is authoring a book on this subject, How Americans Enforce the Law, which traces the historical roots of this regulatory approach and evaluates where private enforcement is effective and where it falls short, including his critique of its use in areas like environmental law. He also has an interest in comparative constitutional law and legal developments related to Latin America. Professor Zambrano is the Associate Dean for Global Programs and faculty director of the Neukom Center for the Rule of Law. In 2021, Professor Zambrano received the Barbara Allen Babcock Award for Excellence in Teaching.