Senior Attorney, Institute for Justice
Robert Frommer serves as a senior attorney with the Institute for Justice. He joined the Institute in August 2008 and is currently litigating on behalf of SpeechNow.org, a group challenging the federal campaign finance laws regarding free speech.
Before joining IJ, Robert was an attorney with the Washington, D.C., office of Gibson, Dunn & Crutcher LLP, where he litigated both complex litigation and public-interest matters. He is a former law clerk to Judge Morris Sheppard Arnold of the U.S. Court of Appeals for the Eighth Circuit.
Robert received his law degree magna cum laude from the University of Michigan Law School in 2004, where he was elected to the Order of the Coif and served as both a book review editor for the Michigan Law Review and president of the Federalist Society student chapter. Before going to law school, Robert earned a master's degree in economics from George Mason University.
Professor of Law, University of Michigan Law School
Professor Nicholas Bagley teaches and writes in the areas of administrative law, regulatory theory, and health law. Prior to joining the Law School faculty, he was an attorney with the appellate staff in the Civil Division at the U.S. Department of Justice, where he argued a dozen cases before the U.S. Courts of Appeals and acted as lead counsel in many more. Professor Bagley also served as a law clerk to Justice John Paul Stevens of the U.S. Supreme Court and to the Hon. David S. Tatel of the U.S. Court of Appeals, District of Columbia Circuit. Professor Bagley holds a BA in English from Yale University and received his JD, summa cum laude, from New York University School of Law. Before entering law school, he joined Teach For America and taught eighth-grade English at a public school in South Bronx. Professor Bagley's work has appeared in the Harvard Law Review, the Columbia Law Review, the Georgetown Law Journal, the New England Journal of Medicine, and the Journal of Health Politics, Policy, and Law. In 2012, he was the recipient of the Law School's L. Hart Wright Award for Excellence in Teaching. He is a frequent contributor to The Incidental Economist, a prominent health policy blog.
Maurice and Hilda Friedman Professor of Law, Columbia Law School; CEO, New Civil Liberties Alliance
Philip Hamburger is the Maurice and Hilda Friedman Professor of Law at Columbia Law School, and Chief Executive Officer at the New Civil Liberties Alliance. Before coming to Columbia, he was the John P. Wilson Professor at the University of Chicago Law School.
He writes on constitutional law and its history—with particular emphasis on religious liberty, freedom of speech and the press, judicial office, administrative power, and unconstitutional conditions.
His books are Separation of Church and State (Harvard 2002), Law and Judicial Duty (Harvard 2008), Is Administrative Law Unlawful? (Chicago 2014), The Administrative Threat (Encounter 2017), and Liberal Suppression: Section 501(c)(3) and the Taxation of Speech (Chicago 2018). A forthcoming book is Purchasing Submission: Conditions, Power, and Freedom (Harvard 2021).
He is a member of the American Academy of Arts and Sciences, and he has served on the board of directors of the American Society for Legal History. He has twice received the Sutherland Prize for the most significant contribution to English legal history, and has been awarded the Henry Paolucci - Walter Bagehot Book Award, the Hayek Book Prize, and the Bradley Prize.
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.
William K. Townsend Professor of Law, Yale Law School
Nicholas R. Parrillo is Townsend Professor of Law at Yale, with a secondary appointment as Professor of History. His research and teaching focus on administrative law and government bureaucracy and extend to legal history, remedies, and legislation. He has received the ABA’s award for the year’s best scholarship in administrative law and the Law and Society Association’s Hurst Prize for the year’s best book in legal history.
Parrillo’s Yale Law Journal article finding new originalist evidence of broad congressional delegations to agencies was discussed in the Solicitor General’s winning brief in the Supreme Court’s latest nondelegation case and in the en banc 5th Circuit opinion in that case. His Harvard Law Review article on how the judiciary handles the federal government’s disobedience to court orders has been discussed in The Washington Post, The Wall Street Journal, and The New York Times. Parrillo also authored a study that provided the empirical basis for best practices adopted by the Administrative Conference of the United States (ACUS) on the federal government’s ubiquitous but controversial use of guidance documents. Peer scholars at Jotwell, in selecting the “best new scholarship” in law, selected each of these three publications (one of them twice). Parrillo’s most recent article, invited for GW’s annual administrative law issue, reveals and analyzes dramatic variation among industries in their willingness to sue their federal health-and-safety regulators.
Parrillo has testified before Congress, been quoted by the Supreme Court, is a senior fellow of ACUS, and has been an instructor at the New York Historical Society’s graduate institute and an invited speaker before the 2nd Circuit Judicial Conference, the U.S. Department of Justice (in 2019 and again in 2024), the ACLU’s national legal staff, and the Federalist Society’s national convention (two times). He is a recipient of the Law School’s annual teaching award.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Rao was appointed to the United States Court of Appeals for the District of Columbia Circuit in March 2019. She graduated from Yale College in 1995 and the University of Chicago Law School in 1999. Following graduation, she served as a law clerk to Judge J. Harvie Wilkinson III of the U.S. Court of Appeals for the Fourth Circuit and, in the 2001 October Term, as law clerk to Justice Clarence Thomas of the U.S. Supreme Court. Between her clerkships, Judge Rao served as counsel for nominations and constitutional law to the U.S. Senate Committee on the Judiciary. In 2002, she joined the international arbitration group of Clifford Chance LLP in London, England. From 2005-2006, she served as Special Assistant and Associate White House Counsel to President George W. Bush. From 2006 to 2017, Judge Rao was a professor at the Antonin Scalia Law School at George Mason University, where she taught constitutional law, legislation and statutory interpretation, and the history and foundations of the administrative state. In 2014, she founded the Center for the Study of the Administrative State, a non-profit Center that promotes academic scholarship and public policy debates about administrative law. In July 2017, she was appointed to serve as the Administrator of the Office of Information and Regulatory Affairs in the Office of Management Budget. She served in this position until her appointment to the D.C. Circuit.
Chief Policy Counsel, Council on Criminal Justice and Senior Advisor, Right on Crime
Marc A. Levin is the Chief Policy Counsel for the Council on Criminal Justice (counciloncj.org) and Senior Advisor for Right on Crime.
An attorney and accomplished author on legal and public policy issues, Marc began the Foundation’s criminal justice program in 2005. This work contributed to nationally praised policy changes that have been followed by dramatic declines in crime and incarceration in Texas. Building on this success, in 2010, Levin developed the concept for the Right on Crime initiative, a TPPF project in partnership with Prison Fellowship and the American Conservative Union Foundation. Right on Crime has become the national clearinghouse for conservative criminal justice reforms and has contributed to the adoption of policies in dozens of states that fight crime, support victims, and protect taxpayers.
In 2014, Levin was named one of the “Politico 50” in the magazine’s annual “list of thinkers, doers, and dreamers who really matter in this age of gridlock and dysfunction.”
Marc has testified on criminal justice policy on four occasions before Congress and has testified before legislatures in states including Texas, Nevada, Kansas, Wisconsin, and California. He also has met personally with leaders such as U.S. Presidents, Speakers of the House, and the Justice Commtitee of the United Kingdom Parliament to share his ideas on criminal justice reform. In 2007, he was honored in a resolution unanimously passed by the Texas House of Representatives that stated, “Mr. Levin’s intellect is unparalleled and his research is impeccable.”
Since 2005, Marc has published dozens of policy papers on topics such as sentencing, probation, parole, reentry, and overcriminalization which are available on the TPPF website. Levin’s articles on law and public policy have been featured in publications such as the Wall Street Journal, USA Today, Texas Review of Law & Politics, National Law Journal, New York Daily News, Jerusalem Post, Toronto Star, Atlanta Journal-Constitution, Philadelphia Inquirer, San Francisco Chronicle, Washington Times, Los Angeles Daily Journal, Charlotte Observer, Dallas Morning News, Houston Chronicle, Austin American-Statesman, San Antonio Express-News and Reason Magazine.
In 1999, Marc graduated with honors from the University of Texas with a B.A. in Plan II Honors and Government. In 2002, Marc received his J.D. with honors from the University of Texas School of Law. Marc was a Charles G. Koch Summer Fellow in 1996. He served as a law clerk to Judge Will Garwood on the U.S. Court of Appeals for the Fifth Circuit and Staff Attorney at the Texas Supreme Court.
Senior Fellow, Stand Together Trust
Vikrant Reddy is a senior fellow at Stand Together Trust, specializing in the area of criminal justice reform. Reddy previously served as a senior policy analyst at the Texas Public Policy Foundation (TPPF), where he managed the launch of TPPF’s national Right on Crime initiative in 2010. He has worked as a research assistant at the Cato Institute, as a judicial clerk to the Hon. Gina M. Benavides in Texas, and as an attorney in private practice. He is a member of the State Bar of Texas, and he serves on the Executive Committee of the Criminal Law Practice Group of the Federalist Society. He is also an appointee to the U.S. Commission on Civil Rights Texas State Advisory Committee.
Reddy’s research and scholarly opinions have appeared in a range of national media outlets, including USA Today, National Review, The Federalist, and others.
Reddy earned his law degree from the Southern Methodist University School of Law. He received his undergraduate degree from the University of Texas at Austin.
Founder and Member, Reeves Law LLC
Director, Project on Criminal Justice, Cato Institute
Matthew Cavedon is the Director of the Cato Institute’s Project on Criminal Justice. He focuses on reforming plea-driven mass adjudication, ensuring police accountability, and defending constitutional criminal originalism. Cavedon’s scholarship has been published (or is forthcoming in) publications including the Arizona State Law Journal, Cato Supreme Court Review, Seattle University Law Review, and Georgetown Journal of Law and Public Policy. Formerly a Georgia public defender and fellow at the Institute for Justice, Cavedon has taught law school courses on criminal law and procedure, as well as the First Amendment. Cavedon clerked for a U.S. district court and the Supreme Court of Georgia. He came to Cato following a fellowship at the Emory University Center for the Study of Law and Religion.
Senior Attorney, Institute for Justice
Robert Frommer serves as a senior attorney with the Institute for Justice. He joined the Institute in August 2008 and is currently litigating on behalf of SpeechNow.org, a group challenging the federal campaign finance laws regarding free speech.
Before joining IJ, Robert was an attorney with the Washington, D.C., office of Gibson, Dunn & Crutcher LLP, where he litigated both complex litigation and public-interest matters. He is a former law clerk to Judge Morris Sheppard Arnold of the U.S. Court of Appeals for the Eighth Circuit.
Robert received his law degree magna cum laude from the University of Michigan Law School in 2004, where he was elected to the Order of the Coif and served as both a book review editor for the Michigan Law Review and president of the Federalist Society student chapter. Before going to law school, Robert earned a master's degree in economics from George Mason University.
Founder and Member, Reeves Law LLC
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