Samuel H. McCoy II Professor of Law, University of Virginia School of Law
John F. Duffy is the Samuel H. McCoy II Professor of Law and Class of 1966 Research Professor of Law at the University of Virginia School of Law, where he teaches administrative law, torts and intellectual property. Professor Duffy has published articles on a wide range of administrative law and regulatory issues in journals such as University of Chicago Law Review, Yale Law Journal, Stanford Law Review, Virginia Law Review, Columbia Law Review, Texas Law Review, Northwestern University Law Review, NYU Law Review, University of Pennsylvania Law Review and the Supreme Court Review. His 1998 article Administrative Common Law in Judicial Review, 77 Tex. L. Rev. 113 (1998), was one of the first articles to criticize the Chevron doctrine as being irreconcilable with § 706 of the APA; it won the American Bar Association’s Scholarship Award in Administrative Law. His 2008 article “Are Administrative Patent Judges Unconstitutional?” was covered on National Public Radio), in the New York Times (Adam Liptak, In One Flaw, Questions on Validity of 46 Judges, May 6, 2008), and in the Wall Street Journal (Dan Slater, Patently Unconstitutional, May 6, 2008). The NYT and WSJ agreed that he was “a different kind of law professor,” “one of the lucky few” whose “writings actually wind up changing the law.”
As an attorney in the courts, Duffy has twice successfully convinced the Supreme Court to overturn lower court doctrines that had been applied in many cases over decades but that were unanimously held to be irreconcilable with Supreme Court precedents. See TC Heartland v. Kraft Foods Group Brands, 581 U.S. 258 (2017); KSR v. Teleflex, 550 U.S. 398 (2007).
Prior to entering legal academics, Duffy clerked on the D.C. Circuit for Stephen Williams and on the Supreme Court for Antonin Scalia. While clerking, he became known as Justice Scalia’s “hapless law clerk,” who had been tasked with unearthing three-quarters of a century of legislative history that made “no difference” to the outcome in an otherwise forgettable case. See Conroy v. Aniskoff, 507 U.S. 511, 527-28 (1993) (Scalia, J., concurring in the judgment).
In earlier days, Duffy enjoyed being a professional blackjack player unwelcome in all Atlantic City casinos and a semi-professional road runner (best marathon time 2:24:33). He holds an A.B. in physics from Harvard and a J.D. from the University of Chicago.
Professor of Law, University of North Carolina School of Law
Andy Hessick joined the Carolina Law faculty in 2016 and serves Judge John J. Parker Distinguished Professor of Law and Associate Dean for Strategy. His teaching and research interests include federal courts, administrative law, remedies, and criminal sentencing. His work has appeared in, among other places, the California Law Review, the Cornell Law Review, the Northwestern University Law Review, the Notre Dame Law Review, and the William and Mary Law Review. His work has been cited by the Supreme Courts of Connecticut, Iowa, Missouri, Tennessee, and Utah; various federal district and circuit courts; and the U.S. Supreme Court.
Hessick received his J.D. from Yale Law School, at which he was an editor of the Yale Law Journal. After law school, he clerked for Judge Reena Raggi on the United States Court of Appeals for the Second Circuit and Judge A. Raymond Randolph on the United States Court of Appeals for the D.C. Circuit. He then served as a Bristow Fellow in the U.S. Solicitor General’s office and practiced litigation at Kellogg Huber Hansen Todd Evans & Figel PLLC in Washington, D.C. He previously taught at the University of Utah and Arizona State University and was a visiting assistant professor at Boston University.
Professor of Law; Co-director, National Security and U.S. Foreig, The George Washington University Law School
Gregory E. Maggs joined the George Washington University Law School faculty in 1993. He is a a Co-director of the law school’s National Security and U.S. Foreign Relations LLM program. He was the Interim Dean of the law school from 2010-2011 and from 2013-2014 and the Senior Associate Dean for Academic Affairs from 2008-2010. He teaches mainly in the areas of commercial law, constitutional law, contracts, and counter-terrorism law, and he has written extensively on these subjects. By vote of the graduating class, he received the law school’s Distinguished Faculty Service Award in 1997, 1998, 2004, 2005, 2011, 2012, 2013, and 2014. In 2012, the university gave him the George Washington Award for outstanding service.
Professor Maggs is a graduate of Harvard College and Harvard Law School. He was a law clerk for Justices Clarence Thomas (1991-1992) and Anthony M. Kennedy (1989-1990) of the U.S. Supreme Court and for the late Judge Joseph T. Sneed of the U.S. Court of Appeals for the Ninth Circuit (1988-1989). He also taught for two years as an assistant professor at the University of Texas School of Law. His other past experience includes service as a special master for the U.S. Supreme Court, a consultant to Independent Counsel Kenneth Starr in the Whitewater Investigation, and an assistant to Robert H. Bork in private practice and research. He is a member of the Advisory Board for the Heritage Foundation's Center for Legal and Judicial Studies and a member of the American Law Institute.
Professor Maggs is a colonel in the U.S. Army Reserve, Judge Advocate General’s Corps. He was commissioned in 1990, and has been assigned as a trial or appellate military judge since 2007. He is a graduate of U.S. Army War College, the Military Judge Course, the Command and General Staff Officer Course, the Judge Advocate Officer Advanced and Basic Courses, the Air Assault School, and the Infantry Weapons Specialist Course. He was called to active duty in 2007-2008. In 2002, he received the Judge Advocates Association's Outstanding Career Armed Services Attorney Award.
George C. Dix Professor in Constitutional Law, Northwestern University Pritzker School of Law
John O. McGinnis is a graduate of Harvard College and Harvard Law School where he was an editor of the Harvard Law Review. He also has an MA degree from Balliol College, Oxford, in philosophy and theology. Professor McGinnis clerked on the U.S. Court of Appeals for the District of Columbia. From 1987 to 1991, he was deputy assistant attorney general in the Office of Legal Counsel at the Department of Justice. He is the author of Accelerating Democracy: Transforming Government Through Technology (Princeton 2013) and Originalism and the Good Constitution (Harvard 2013) (with M. Rappaport). He is a past winner of the Paul Bator award given by the Federalist Society to an outstanding academic under 40. He has been listed by the United States on the roster of panelists who may be called upon to decide World Trade Organization Disputes.
Professor of Law, University of Michigan Law School
Christopher J. Walker is a Professor of Law at the University of Michigan. Prior to joining Michigan law faculty in 2022, he spent a decade teaching at The Ohio State University Moritz College of Law. He previously clerked for Justice Anthony Kennedy of the U.S. Supreme Court, worked on the Civil Appellate Staff at the U.S. Department of Justice, and served on the Senate Judiciary Committee staff for the Gorsuch Supreme Court confirmation. Professor Walker’s research focuses on administrative law, regulation, and law and policy at the agency level. Outside the law school, he chaired the American Bar Association’s Section of Administrative Law and Regulatory Practice in 2020-21 and served as one of forty Public Members of the Administrative Conference of the United States from 2016-2022, and he continues to serve in both organizations in various capacities. He also works of counsel at the U.S. Chamber Litigation Center. In 2022, he received the Federalist Society’s Joseph Story Award.
Anne Shea Ransdell and William Garland "Buck" Ransdell, Jr. Distinguished Professor of Law, University of North Carolina School of Law
Carissa Byrne Hessick joined the Carolina Law faculty in 2016. She serves as the Anne Shea Ransdell and William Garland “Buck” Ransdell, Jr. Distinguished Professor of Law and as the director of the Prosecutors and Politics Project. Her teaching and research interests include criminal law, the structure of the criminal justice system, criminal sentencing, and child pornography crimes. Hessick is the author of multiple law review articles, essays, and op eds on plea bargaining, the powers and selection of prosecutors, Sixth Amendment sentencing rights, and criminal statutes. Her work has appeared in the California Law Review, the Cornell Law Review, the L.A. Times, the UCLA Law Review, and the Virginia Law Review, among others. She founded the Prosecutors and Politics Project in 2018. And she currently serves as the Reporter for the ABA Criminal Justice Section’s Sentencing Standards Task Force.
Hessick attended Yale Law School, where she was an editor of the Yale Law Journal and winner of the Potter Stewart Prize for the Morris Tyler Moot Court of Appeals. After graduating from law school, she clerked for Judge Barbara S. Jones on the Southern District of New York and for Judge A. Raymond Randolph on the D.C. Circuit. She also worked as a litigation associate at Wachtell, Lipton, Rosen & Katz in New York City. Before joining the faculty at Carolina Law, Hessick taught on the faculties at Arizona State University’s Sandra Day O’Connor College of Law and the University of Utah’s S.J. Quinney College of Law. She also spent two years as a Climenko Fellow at Harvard Law School.
Ronald N. Boyce Presidential Professor of Criminal Law and University Distinguished Professor of Law, The University of Utah College of Law
Paul G. Cassell is an internationally recognized legal scholar on criminal and civil justice, crime victims' rights, constitutional law, evidence, judicial process, and other legal issues. Cassell received a B.A. (1981) and a J.D. (1984) from Stanford University, where he graduated Order of the Coif and was President of the Stanford Law Review. He clerked for then-Judge Antonin Scalia when Scalia was on the U.S. Court of Appeals for the D.C. Circuit (1984-85) and for Chief Justice Warren Burger of the United States Supreme Court (1985-86). Cassell then served as an Associate Deputy Attorney General with the U.S. Justice Department (1986-88) and as an Assistant U.S. Attorney for the Eastern District of Virginia (1988 to 1991). Cassell joined the faculty at the College of Law in 1992, where he taught full-time until he was sworn in as a U.S. District Court Judge for the District of Utah in July 2002. In November 2007, he resigned his judgeship to return full-time to the College of Law to teach, write, and litigate concerning issues relating to crime victims' rights and criminal and civil justice reform. Professor Cassell has also published numerous law review articles in journals such as the Stanford Law Review, the Michigan Law Review, the Harvard Journal of Law and Public Policy, and the Journal of Criminal Law and Criminology. He is a co-author of the nation's only law school textbook on crime victims' rights, Victims in Criminal Procedure (various editions, most recently in its fifth edition published in 2025). Professor Cassell has argued pro bono cases relating to criminal procedure and crime victims' rights before the United States Supreme Court, the 2nd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, and D.C. Circuits (including the 5th and 11th Circuits en banc), several U.S. District Courts, the Utah Supreme Court, and the Arizona Supreme Court. In 2020, Cassell received the Ronald Wilson Reagan Public Policy Award - National Crime Victims' Service Award from the U.S. Department of Justice. Cassell is a member of the American Law Institute, a fellow of the American Bar Foundation, and an inaugural member of the Council on Criminal Justice. He is also an occasional blogger at The Volokh Conspiracy.
Professor of Law, The University of Utah S.J. Quinney College of Law
In collaboration with other leading experts at the University of Utah S.J. Quinney College of Law, Professor Guiora helps lead the school's efforts to provide cutting-edge research, innovative training, and public service initiatives in the prevention and mitigation of global conflict.
Professor Guiora writes and lectures extensively on issues such as the legal aspects of counterterrorism, rearticulating international law, global perspectives on counterterrorism, terror financing, international law and morality in armed conflict, educating IDF commanders and soldiers on international law and morality, religion and terrorism, domestic terror courts, self defense, and geo-politics and international law. He has testified before the U.S. Senate Judiciary Committee on handling terrorism detainees within the American justice system, and before a subcommittee of the U.S. House of Representatives Committee on Homeland Security on the effectiveness, accountability, and resilience in homeland security. As an expert commentator, Professor Guiora is frequently interviewed by and quoted in the media, including CNN, the Washington Post, PBS, the New York Times, the Wall Street Journal, the Los Angeles Times, the Chicago Sun Times, the BBC, the Associated Press, the Jersualem Post, Al-Jazerrah TV, the Bloomberg Report, C-Span, the Christian Science Monitor, Fox TV, the New York Daily News, and NPR.
Prior to joining the faculty at the College of Law, Professor Guiora was Professor of Law and the Founding Director of the Institute for Global Security Law and Policy at Case Western Reserve University School of Law. Before joining Case Western in 2004, Professor Guiora served for 19 years in the Israel Defense Forces Judge Advocate General's Corps (Lt. Col. Ret.), where he held a number of senior command positions, including Commander of the IDF School of Military Law, Judge Advocate for the Navy and Home Front Command, and the Legal Advisor to the Gaza Strip. During his military service, Professor Guiora was involved in the capture of the PLO weapons ship Karine A, implementation of the Gaza-Jericho Agreement, the Israeli-Palestinian Interim Agreement, and "Safe Passage" between the Gaza Strip and the West Bank. Professor Guiora also had command responsibility for the development of an interactive software program that teaches an eleven point code-of-conduct based on International Law, Israeli Law, and the IDF code. This internationally acclaimed program is used to teach IDF soldiers and commanders their obligations regarding a civilian population during an armed conflict. Based on this experience, Professor Guiora was invited by the Center for Civic Education and Leadership Development of the Armed Forces of the Federal Republic of Germany to discuss research and developments in the ethical education of armed forces.
Professor Guiora teaches Criminal Law, Criminal Procedure, International Law, Global Perspectives on Counterterrorism, and Religion and Terrorism, and he uses innovative scenario-based instruction methods to educate students regarding national and international security issues.
Partner, Sidley Austin LLP
RICHARD D. KLINGLER is a partner based in the Washington, D.C., office. He focuses his practice on national security matters and complex litigation in U.S. courts involving constitutional law and cross-border disputes. He has extensive litigation and regulatory experience working on behalf of telecommunications, finance, energy, and media clients. He has participated in matters before the U.S. Supreme Court, other appellate courts, and trial and regulatory bodies. He has worked extensively on matters being addressed in Congressional and other investigations or pending before Executive Branch departments and agencies.
Mr. Klingler joined the firm in 1990 and first became a partner in 1996. He served from 2006-2007 as the General Counsel and Legal Adviser on the National Security Council staff, advising senior government officials on an array of intelligence, defense, foreign policy, litigation, and investigatory matters. From 2005-2007, he served in the Office of the Counsel to the President, concluding as Senior Associate Counsel to the President. His work focused on litigation, Congressional investigations, and issues before the Departments of State and Homeland Security. He worked from 1997-2002 as an investment banker with Credit Suisse First Boston on equity capital market and M&A transactions in the telecommunications, energy, and finance sectors. From 1994-96 he worked in Australia as Regulatory Advisor and then Regulatory Counsel for Telstra Corp., where he addressed litigation, legislative, transactional, and regulatory issues.
Mr. Klingler is an Adjunct Fellow with the American Enterprise Institute, addressing counter-terrorism legal issues, and, from 1993-94, was Guest Scholar at The Brookings Institution, which published his book, The New Information Industry: Regulatory Challenges and the First Amendment (1996). He testified several times before Congress on Constitutional, counter-terrorism, and sovereign immunity issues, and has written on public policy matters for various national publications.
Mr. Klingler was a law clerk to U.S. Supreme Court Justice Sandra Day O'Connor (1989-90) and Judge Kenneth W. Starr of the U.S. Court of Appeals for the D.C. Circuit (1988-89). He obtained law degrees from Oxford University, which he attended as a Rhodes Scholar, and from Stanford Law School, where he was Senior Articles Editor of The Stanford Law Review and a member of Order of the Coif.
Ronald N. Boyce Presidential Professor of Criminal Law and University Distinguished Professor of Law, The University of Utah College of Law
Paul G. Cassell is an internationally recognized legal scholar on criminal and civil justice, crime victims' rights, constitutional law, evidence, judicial process, and other legal issues. Cassell received a B.A. (1981) and a J.D. (1984) from Stanford University, where he graduated Order of the Coif and was President of the Stanford Law Review. He clerked for then-Judge Antonin Scalia when Scalia was on the U.S. Court of Appeals for the D.C. Circuit (1984-85) and for Chief Justice Warren Burger of the United States Supreme Court (1985-86). Cassell then served as an Associate Deputy Attorney General with the U.S. Justice Department (1986-88) and as an Assistant U.S. Attorney for the Eastern District of Virginia (1988 to 1991). Cassell joined the faculty at the College of Law in 1992, where he taught full-time until he was sworn in as a U.S. District Court Judge for the District of Utah in July 2002. In November 2007, he resigned his judgeship to return full-time to the College of Law to teach, write, and litigate concerning issues relating to crime victims' rights and criminal and civil justice reform. Professor Cassell has also published numerous law review articles in journals such as the Stanford Law Review, the Michigan Law Review, the Harvard Journal of Law and Public Policy, and the Journal of Criminal Law and Criminology. He is a co-author of the nation's only law school textbook on crime victims' rights, Victims in Criminal Procedure (various editions, most recently in its fifth edition published in 2025). Professor Cassell has argued pro bono cases relating to criminal procedure and crime victims' rights before the United States Supreme Court, the 2nd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, and D.C. Circuits (including the 5th and 11th Circuits en banc), several U.S. District Courts, the Utah Supreme Court, and the Arizona Supreme Court. In 2020, Cassell received the Ronald Wilson Reagan Public Policy Award - National Crime Victims' Service Award from the U.S. Department of Justice. Cassell is a member of the American Law Institute, a fellow of the American Bar Foundation, and an inaugural member of the Council on Criminal Justice. He is also an occasional blogger at The Volokh Conspiracy.
Richard and Frances Mallery Professor of Law and Faculty Director, Constitutional Law Center, Stanford Law School
Michael W. McConnell is the Richard and Frances Mallery Professor and Faculty Director of the Constitutional Law Center at Stanford Law School, and a Senior Fellow at the Hoover Institution. From 2002 to 2009, he served as a Circuit Judge on the United States Court of Appeals for the Tenth Circuit. He was nominated by President George W. Bush, a Republican, and confirmed by a Democratic Senate by unanimous consent. McConnell has previously held chaired professorships at the University of Chicago and the University of Utah, and visiting professorships at Harvard and NYU. He teaches courses on constitutional law, constitutional history, First Amendment, and interpretive theory. He has published widely in the fields of constitutional law and theory, especially church and state, equal protection, and separation of powers. His book, “The President Who Would Not Be King: Executive Power Under the Constitution,” was published by Princeton University Press in 2020, based on the Tanner Lectures in Human Values, which he delivered at Princeton in 2019. His latest book, co-authored with Nathan Chapman, “Agreeing to Disagree: How the Establishment Clause Protects Religious Diversity and Freedom of Conscience,” was published by Oxford University Press in mid-2023. McConnell has argued sixteen cases in the United States Supreme Court, most recently Carney v. Adams (2020). defending a provision of the Delaware Constitution requiring political balance on that state’s courts. More recently, he was co-counsel in Gonzalez v. Google. He earned his B.A. from Michigan State University and his J.D. from the University of Chicago, and has received honorary degrees from Notre Dame University and Michigan State. He served as law clerk to Supreme Court Justice William J. Brennan, Jr. and D.C. Circuit Chief Judge J. Skelly Wright. He has been Assistant General Counsel of the Office of Management & Budget, Assistant to the Solicitor General of the Department of Justice, and a member of the President’s Intelligence Oversight Board. He is Senior of Counsel to the law firm Wilson, Sonsini, Goodrich & Rosati, and is co-chair of Meta’s Oversight Review Board.
Panel II: Who Determines an Agency's Power?
16th Annual Faculty Conference
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