David Yellen returns to Cornell Law School to teach criminal law and criminal justice reform. His major area of academic expertise is criminal law, particularly sentencing and juvenile justice. He has written widely about the federal sentencing guidelines, testified before the United States Sentencing Commission, advised President Clinton's transition team on white collar crime enforcement, and argued a federal sentencing case before the United States Supreme Court, United States v. LaBonte, 520 U.S. 751 (1997).
Yellen served as Dean and Professor of Law at Loyola University Chicago School of Law for 11 years, from 2005-2016. During this time Loyola was recognized as one of the most innovative law schools in the country. He was frequently included on National Jurist magazine’s list of the 25 Most Influential People in Legal Education. Yellen is a former faculty member of Hofstra Law School, where he held the Max Schmertz Distinguished Professorship and served as Dean. He has also been the Reuschlein Distinguished Visiting Professor at Villanova University School of Law and served as a visiting professor at Cornell Law School in 2000.
After Loyola, Yellen served as President of Marist College from 2016-2019. Before beginning his academic career, Dean Yellen clerked for a federal judge, practiced law in Washington, D.C., and served as counsel to the Judiciary Committee of the U.S. House of Representatives.