Associate Attorney, Gibson Dunn
David Casazza is an associate in the Washington, D.C. office of Gibson, Dunn & Crutcher. He practices in the firm’s Appellate and Constitutional Law, and Administrative Law and Regulatory Practice groups.
Mr. Casazza has represented clients in appellate and regulatory litigation before the Supreme Court of the United States, federal appellate courts, and federal district courts. These cases have involved a wide range of subjects including separation of powers, federal rulemaking challenges, data privacy protections, anti-terrorism claims and foreign sovereign immunity, energy infrastructure permitting, and a variety of First Amendment speech and religious liberty claims. He has also represented clients in complex litigation, obtaining dismissal with prejudice of consumer class actions attacking major brand names. He has been named by Best Lawyers as a 2021 and 2022 “One to Watch” in Appellate Practice.
He graduated magna cum laude from Harvard Law School, where he served as a Managing Editor for the Harvard Journal of Law and Public Policy and as Executive Vice President of the Harvard Federalist Society. Mr. Casazza received an A.B. magna cum laude in history from Princeton and an M.A. in history from the Johns Hopkins University.
Mr. Casazza served as a law clerk to Justice Samuel Alito on the Supreme Court of the United States and for Judge Jennifer Walker Elrod on the United States Court of Appeals for the Fifth Circuit.
He is a member of the bars of New York and the District of Columbia and is admitted to practice in the United States Courts of Appeals for the Third, Fourth, Fifth, and Ninth Circuits and in the United States District Court for the District of Columbia.
Laurence A. Tisch Professor of Law and Director, Classical Liberal Institute, New York University School of Law; Director, Classical Liberal Institute, Civitas Institute University of Texas at Austin
Richard A. Epstein is the inaugural Laurence A. Tisch Professor of Law at NYU School of Law. Prior to his joining the faculty, he was a visiting law professor at NYU from 2007 through 2009. He served as the Peter and Kirstin Bedford Senior Fellow at the Hoover Institution from 2000 to 2024. Since 2024 to the present he is a senior lecturer at the Civitas Institute at the University of Texas—Austin. Epstein is also the James Parker Hall Distinguished Service Professor of Law Emeritus and a senior lecturer at the University of Chicago. His initial law school appointment was at the University of Southern California from 1968 to 1972. Epstein received an LL.D., h.c. from the University of Ghent, 2003. He has been a member of the American Academy of Arts and Sciences since 1985 and was a Senior Fellow of the Center for Clinical Medical Ethics at the University of Chicago Division of Biological Sciences, also from 1983. to 2022 He served as editor of the Journal of Legal Studies from 1981 to 1991, and of the Journal of Law and Economics from 1991-2001. From 2001 to 2010 he was a director of the John M. Olin Program in Law and Economics at the University of Chicago.
His newest book, The Myth of Birthright Citizenship: What the Fourteenth Amendment Really Says was published in 2026 (Encounter Books). Prior to that he has published many books including, The Dubious Morality of the Modern Administrative State (Roman & Littlefield 2020).Earlier he published th Classical Liberal Constitution: The Uncertain Quest for Limited Government (Harvard 2014) iHis previous books include Design for Liberty: Private Property, Public Administration and the Rule of Law (Harvard 2011); The Case Against the Employee Free Choice Act (Hoover 2009); Supreme Neglect: How to Revive the Constitutional Protection of Property Rights (Oxford 2008); Antitrust Decrees in Theory and Practice: Why Less is More (AEI 2007); Overdose: How Excessive Government Regulation Stifles Pharmaceutical Innovation (Yale University Press. 2006); How Progressives Rewrote the Constitution (Cato 2006); Cases and Materials on Torts (Aspen Law & Business; 8th ed. 2004); Skepticism and Freedom: A Modern Case for Classical Liberalism (University of Chicago, 2003); Torts (Aspen Law & Business 1999); Principles for a Free Society: Reconciling Individual Liberty with the Common Good (Perseus Books, 1998): Mortal Peril: Our Inalienable Rights to Health Care (Addison-Wesley, 1997); Simple Rules for a Complex World (Harvard, 1995); Bargaining With the State (Princeton, 1993); Forbidden Grounds: The Case Against Employment Discrimination Laws (Harvard , 1992); Takings: Private Property and the Power of Eminent Domain (Harvard, 1985); and Modern Products Liability Law (Greenwood Press, 1980). He has also edited(with Catherine M. Sharkey) Cases and Materials on the Law of Torts (10th edition 2012).
Professor Epstein has written numerous articles on a wide range of legal and interdisciplinary subjects. He has taught courses in administrative law, antitrust law, civil procedure, communications, constitutional law, contracts, corporations, criminal law, employment discrimination law, environmental law, food and drug law health law and policy, legal history, labor law, property, real estate development and finance, jurisprudence, labor law; land use planning, patents, individual, estate and corporate taxation, Roman Law; torts, and workers' compensation.
Professor Epstein also writes a regular column for Civitas Institute, which also sponsors his podcast, The Libertarian with Charles C.W. Cooke, and Law Talk, with Cooke and John Yoo. He also does a podcast with John Batchelor. And appears regularly on the Freedom File with Judge Andrew Napolitano.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Hugh and Hazel Darling Foundation Professor of Law; Director, Center for the Study of Constitutional Originalism, University of San Diego School of Law
Laurence A. Tisch Professor of Law and Director, Classical Liberal Institute, New York University School of Law; Director, Classical Liberal Institute, Civitas Institute University of Texas at Austin
Richard A. Epstein is the inaugural Laurence A. Tisch Professor of Law at NYU School of Law. Prior to his joining the faculty, he was a visiting law professor at NYU from 2007 through 2009. He served as the Peter and Kirstin Bedford Senior Fellow at the Hoover Institution from 2000 to 2024. Since 2024 to the present he is a senior lecturer at the Civitas Institute at the University of Texas—Austin. Epstein is also the James Parker Hall Distinguished Service Professor of Law Emeritus and a senior lecturer at the University of Chicago. His initial law school appointment was at the University of Southern California from 1968 to 1972. Epstein received an LL.D., h.c. from the University of Ghent, 2003. He has been a member of the American Academy of Arts and Sciences since 1985 and was a Senior Fellow of the Center for Clinical Medical Ethics at the University of Chicago Division of Biological Sciences, also from 1983. to 2022 He served as editor of the Journal of Legal Studies from 1981 to 1991, and of the Journal of Law and Economics from 1991-2001. From 2001 to 2010 he was a director of the John M. Olin Program in Law and Economics at the University of Chicago.
His newest book, The Myth of Birthright Citizenship: What the Fourteenth Amendment Really Says was published in 2026 (Encounter Books). Prior to that he has published many books including, The Dubious Morality of the Modern Administrative State (Roman & Littlefield 2020).Earlier he published th Classical Liberal Constitution: The Uncertain Quest for Limited Government (Harvard 2014) iHis previous books include Design for Liberty: Private Property, Public Administration and the Rule of Law (Harvard 2011); The Case Against the Employee Free Choice Act (Hoover 2009); Supreme Neglect: How to Revive the Constitutional Protection of Property Rights (Oxford 2008); Antitrust Decrees in Theory and Practice: Why Less is More (AEI 2007); Overdose: How Excessive Government Regulation Stifles Pharmaceutical Innovation (Yale University Press. 2006); How Progressives Rewrote the Constitution (Cato 2006); Cases and Materials on Torts (Aspen Law & Business; 8th ed. 2004); Skepticism and Freedom: A Modern Case for Classical Liberalism (University of Chicago, 2003); Torts (Aspen Law & Business 1999); Principles for a Free Society: Reconciling Individual Liberty with the Common Good (Perseus Books, 1998): Mortal Peril: Our Inalienable Rights to Health Care (Addison-Wesley, 1997); Simple Rules for a Complex World (Harvard, 1995); Bargaining With the State (Princeton, 1993); Forbidden Grounds: The Case Against Employment Discrimination Laws (Harvard , 1992); Takings: Private Property and the Power of Eminent Domain (Harvard, 1985); and Modern Products Liability Law (Greenwood Press, 1980). He has also edited(with Catherine M. Sharkey) Cases and Materials on the Law of Torts (10th edition 2012).
Professor Epstein has written numerous articles on a wide range of legal and interdisciplinary subjects. He has taught courses in administrative law, antitrust law, civil procedure, communications, constitutional law, contracts, corporations, criminal law, employment discrimination law, environmental law, food and drug law health law and policy, legal history, labor law, property, real estate development and finance, jurisprudence, labor law; land use planning, patents, individual, estate and corporate taxation, Roman Law; torts, and workers' compensation.
Professor Epstein also writes a regular column for Civitas Institute, which also sponsors his podcast, The Libertarian with Charles C.W. Cooke, and Law Talk, with Cooke and John Yoo. He also does a podcast with John Batchelor. And appears regularly on the Freedom File with Judge Andrew Napolitano.
Senior Attorney, Pacific Legal Foundation
Damien Schiff is a senior attorney at Pacific Legal Foundation. He leads its environmental practice group, a unique initiative that draws broadly from PLF’s expertise and success in property rights and separation of powers litigation. Over the years, Damien has represented hundreds of landowners and property rights advocates to defend their liberties against heavy-handed and unwarranted environmental and land-use regulation. His litigation experience includes Sackett v. U.S. Environmental Protection Agency, a groundbreaking decision in which the U.S. Supreme Court upheld the right of landowners to challenge Clean Water Act compliance orders issued by EPA, and Contoski v. Norton, PLF’s successful effort to force the federal government to make good on its promise to delist the bald eagle from the Endangered Species Act.
Besides litigation, Damien has written academic articles on a variety of subjects, including the Endangered Species Act, the Clean Water Act, greenhouse gas torts, the duty to rescue, and international water law. He has appeared on a variety of television and radio programs and has been quoted in The New York Times, The Wall Street Journal, Harper’s Magazine, and The Economist, among other publications.
He obtained his law degree magna cum laude from the University of San Diego School of Law, and his undergraduate degree magna cum laude from Georgetown University. While at USD, he was a research assistant for Professor Bernard Siegan, a leading constitutional theorist and advocate for property rights and economic liberty. Immediately prior to joining PLF, Damien clerked for Judge (and former PLF attorney) Victor Wolski of the United States Court of Federal Claims. Damien credits the mentoring and examples of Professor Siegan and Judge Wolski for his decision to pursue a career in liberty-based public interest litigation.
Damien lives in Sacramento with his wife, two young sons, four chickens, and a cat named Princess. In his off hours he enjoys stamp collecting, Gregorian chant, and martinis—preferably at the same time.
Andrew Varcoe was formerly a partner at Boyden Gray & Associates in Washington, D.C. From 2014 to 2017, Mr. Varcoe was Deputy General Counsel at the Biotechnology Innovation Organization (BIO), the trade association for the biotechnology industry. He previously served as an attorney in the Office of the General Counsel of the U.S. Department of Agriculture (USDA) in Washington, D.C., and Harrisburg, Pennsylvania. While at USDA, he briefed, argued, and mediated cases in the federal courts of appeals and helped manage USDA’s and its agencies’ nationwide appellate litigation docket, working closely with trial and appellate lawyers at the U.S. Department of Justice. Before joining USDA, Mr. Varcoe was an associate and then counsel at Wilmer Cutler Pickering Hale and Dorr LLP (previously Wilmer, Cutler & Pickering). Mr. Varcoe served as a law clerk to Justice Francis X. Spina of the Massachusetts Supreme Judicial Court (from 1999 to 2000), and to Judge Edith H. Jones of the U.S. Court of Appeals for the Fifth Circuit (from 2001 to 2002).
Mr. Varcoe received his J.D. cum laude in 1999 from Harvard Law School, where he was a research assistant to Professor Martha Minow and an editor of the Harvard Journal of Law & Public Policy. Mr. Varcoe graduated with honors in 1995 from the University of Chicago, where he was Student Ombudsperson (a mediator, reporting to the President of the University, who investigated and resolved student grievances) and a member of Phi Beta Kappa.
In 2018 and 2019, Mr. Varcoe served as Chairman of the Executive Committee of the Federalist Society’s Environmental Law and Property Rights Practice Group.
Distinguished Professor of Law, Widener University Delaware Law School
James R. May is Distinguished Professor of Law, and Chief Sustainability Officer, Widener University (USA). He also serves as co-Director of the Environmental Rights Institute and co-Director of the Dignity Rights Project at Widener University Delaware Law School. May is also an Adjunct Professor of Graduate Engineering, and founded and co-chairs a program on marine policy. May is the editor of Principles of Constitutional Environmental Law (American Bar Association), and co-editor of Shale Gas and the Future of Energy (Edward Elgar), Global Environmental Constitutionalism (Cambridge), Environmental Constitutionalism in Context (Edward Elgar), New Frontiers in Environmental Constitutionalism (United National Environment Programme, forthcoming), Implementing Environmental Constitutionalism(Cambridge, forthcoming), Standards of Environmental Constitutionalism (Cambridge, forthcoming), and Human Rights and the Environment: Indivisibility, Dignity and Legality (Edward Elgar, forthcoming). May is also author or co-author of more than 100 articles and book chapters, and numerous amicus briefs to the U.S. Supreme Court and U.S. federal courts of appeal on issues including environmental law, constitutional law, comparative constitutional, international environmental law, environmental rights, and human dignity.
May founded two non-profit environmental organizations (the Mid-Atlantic and the Eastern Environmental Law Centers), and has litigated more than 200 public interest environmental claims, including cases throughout the Mid-Atlantic to restore water and air quality, conserve rare species and habitats, and protect biodiversity.
May is a Member of Faculty to the National Judicial College, and a Fellow of the American College of Environmental Lawyers, for whom he has served as a delegate to Haiti and China. May has also served as a consultant to the U.S. Embassy on legal education in the Philippines, and to the Hungarian Embassy and the Moroccan Human Rights Council on constitutional reform. May is a member of Phi Kappa Phi, serves on numerous boards, and has won numerous awards, including from Pace University, Sierra Club, and the American Canoe Association. He earned his B.S. in Mechanical Engineering from the University of Kansas (Bowman Scholar), J.D. from the University of Kansas (Appellate Advocacy Scholar and national moot court champion), and LL.M. in Environmental Law from Pace University, where he was the Feldshuh Fellow and graduated first in class.
May is a member of the bar in the State of Pennsylvania, several federal courts of appeal, and the U.S. Supreme Court.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Hugh and Hazel Darling Foundation Professor of Law; Director, Center for the Study of Constitutional Originalism, University of San Diego School of Law
Topics
Liberty Month Revisited: Separation of Powers - A Primer
This month we are sharing a selection of pieces from The Federalist Society's Liberty Month...
Gill v. Whitford - Post-Decision SCOTUScast
David W. Casazza
On June 18, 2018, the Supreme Court decided Gill v. Whitford, a case considering claims...
The Supreme Court Tackles Patent Reform: Inter Partes Review Under the AIA Undermines the Structural Protections Offered by Article III Courts
Richard A. Epstein
Note from the Editor: This article criticizes Justice Clarence Thomas’ opinion in Oil States. It...
Topics
AT&T/Time Warner Decision: The Triumph of Economic Analysis
On June 12, Judge Richard Leon of the District Court for the District of Columbia...
Topics
Do Animals (or Humans Claiming to Represent Them) Have Constitutional Standing to File Federal Lawsuits? In the Ninth Circuit, the Answer Is Yes.
Do monkeys have the right to sue for copyright infringement? If the question strikes you...
Reforming Administrative Adjudication
Jenn L. Mascott, Michael B. Rappaport
Agencies formally adjudicate a massive number of federal cases with administrative law judges. This delegation...
Reforming Administrative Adjudication
Administrative Law & Regulation Practice Group Teleforum
TeleforumThe Supreme Court Tackles Patent Reform: Further Reflections on the Oil States Case after Oral Argument Before the Supreme Court
Richard A. Epstein
Note from the Editor: This article provides alternative answers to some of the questions posed...
Topics
Further Reflections on the Oil States Case after Oral Argument Before the Supreme Court
On November 27, 2017, the United States Supreme Court heard oral argument in Oil States...
Courthouse Steps: Juliana v. United States
Damien Michael Schiff, Andrew R. Varcoe, James R. May
On December 11, a Ninth Circuit panel heard argument in San Francisco in an unusual appellate proceeding...