Immigration Policy Analyst, Cato Institute
David J. Bier is an immigration policy analyst at the Cato Institute’s Center for Global Liberty and Prosperity. He is an expert on visa reform, border security, and interior enforcement, and his work has been cited in the Washington Post, New York Times, Wall Street Journal, USA Today, Politico, and many other print and online publications.
From 2013 to 2015, Mr. Bier drafted immigration legislation as senior policy advisor for Congressman Raúl Labrador, a member of the House Judiciary Committee’s Subcommittee on Immigration and Border Security. Previously, he worked as the immigration policy analyst at the Competitive Enterprise Institute and most recently as the director of immigration policy at the Niskanen Center.
Mr. Bier has a B.A. in political science from Grove City College in Pennsylvania.
Senior Fellow, National Review
Bestselling author Andrew C. McCarthy is a contributing editor at National Review, a senior fellow at National Review Institute, and a Fox News contributor. He is a former Chief Assistant United States Attorney in the Southern District of New York and led the terrorism prosecution against the “Blind Sheikh” (Omar Abdel Rahman) and eleven other jihadists for conducting a war of urban terrorism against the United States that included the 1993 World Trade Center bombing and a plot to bomb New York City landmarks. During is 20-year career as a prosecutor, he received numerous honors, including the Justice Department’s highest awards. Andy speaks and writes widely on law and national security, radical Islam, politics, and culture. He has testified before Congress as an expert on issues of constitutional law, counterterrorism, and law-enforcement. He is a columnist for The Hill, and his essays and book reviews appear frequently at The New Criterion. His most recent New York Times bestselling book is Ball of Collusion (Encounter Books, 2019), about the Russiagate controversy (an updated version was published in 2020). His other books include Willful Blindness (2008), The Grand Jihad (2010), Spring Fever: The Illusion of Islamic Democracy (2012), and Faithless Execution (2014). He has also written several pamphlets in the Broadside series published by Encounter Books, most recently Islam and Free Speech (2015).
Director of Muslim Matters, America Matters
Shireen Qudosi is an American Muslim writer and strategist. She specializes in understanding and defeating ideological drivers. Her articles have been featured in The Federalist, The Huffington Post, On Being, The Middle East Forum, Fox, and The Hill, among others. She’s appeared on Fox, BBC, Australia’s Radio National, NewsMax, and Breitbart to discuss challenges facing American Muslims.
Her keynote writings also include an in-depth assessment on the War on Terror through the lens of WWII and a two-hour exclusive interview with radical Imam Abu Taubah, who was linked to Orlando Shooter Omar Mateen. In 2016, Ms. Qudosi testified before the House Homeland Security Committee Hearing on Radical Islam, offering a powerful testimony that tied the current crisis to Islam's conflicted history.
Her experience has given her insight in forecasting the conversation among the world’s leading secular and religious Islamic leaders. As a former refugee raised across three continents, Ms. Qudosi has a unique perspective of the issues facing the U.S. and global Muslim community.
In 2011, she was also named one of the top ten North American Muslim Reformers. She presently serves as Director of Muslim Matters, at America Matters. She’s currently also working on her first book titled Islam’s Origin Story.
Director of Health Policy Studies, Cato Institute
Michael F. Cannon is the Cato Institute’s director of health policy studies. His scholarship spans public health; regulation of clinicians, medical facilities, pharmaceuticals, and medical devices; employer‐sponsored and other private health insurance; Medicare; Medicaid; CHIP; the Veterans Health Administration; medical malpractice litigation; administrative law; international health systems; political philosophy; and more. Cannon is “an influential health‐care wonk” (Washington Post) and “the most famous libertarian health care scholar” (Washington Examiner). Washingtonian magazine named Cannon one of Washington, DC’s “Most Influential People” in 2021, 2022, and 2023.
Cannon has appeared on ABC, Al Jazeera, BBC, CBS, CNN, CNBC, C‑SPAN, Fox News Channel, NPR, and other broadcast media. His articles have appeared in the Wall Street Journal; the New York Times; USA Today; the Washington Post; the Los Angeles Times; SCOTUSBlog; Forum for Health Economics and Policy; JAMA Internal Medicine; Health Matrix: Journal of Law‐Medicine; Harvard Health Policy Review; the Yale Journal of Health Policy, Law, and Ethics; the Journal of Health Politics, Policy and Law; and Quinnipiac Health Law Journal. His latest book is Recovery: A Guide to Reforming the U.S. Health Sector.
Cannon was previously a domestic policy analyst for the U.S. Senate Republican Policy Committee, where he advised the Senate leadership on health, education, labor, welfare, and the Second Amendment. He is a member of the Board of Advisers of Harvard Health Policy Review and the Federalist Society Regulatory Transparency Project’s FDA & Health Working Group.
Cannon holds an MA in economics and a JM in law and economics from George Mason University and a BA in American government from the University of Virginia.
Professor of Law, Maurer School of Law, Indiana University of Bloomington
Professor David Gamage is a scholar of tax law and policy and also of health law and policy. He has written extensively on tax and budget policy at both the U.S. state and federal levels, as well as on tax theory, fiscal federalism, and the intersections between taxation and health care. Professor Gamage consistently ranks in the top five of the SSRN Tax Professor Rankings.
Gamage has authored or coauthored over fifty scholarly articles and essays. His scholarship has appeared in a range of journals, including the peer-edited Tax Law Review and Public Finance Review, and the flagship law reviews of the University of Chicago, the University of California, and Northwestern Law Schools. His casebook, Taxation: Law, Planning, and Policy, is published by Carolina Academic Press.
From 2010 through 2012, Gamage served as special counsel to the U.S. Department of the Treasury, Office of Tax Policy. In that position, he administered the individual income tax portfolio of the Treasury Department's Tax Legislative Counsel, and he oversaw the drafting of all individual income tax regulations and executive branch initiatives related to the individual income tax. Gamage's position primarily involved the drafting and implementation of tax provisions of the Affordable Care Act ("Obamacare"). Since returning to academia in 2012, Gamage has served on a tax reform commission for the state of California and has regularly advised other state and federal policymakers on tax and health policy.
Professor of Law, Antonin Scalia Law School, George Mason University
ILYA SOMIN is Professor of Law at George Mason University and the B. Kenneth Simon Chair in Constitutional Studies at the Cato Institute. His research focuses on constitutional law, property law, democratic theory, federalism, and migration rights. He is the author of Free to Move: Foot Voting, Migration, and Political Freedom (Oxford University Press, revised and expanded edition, 2022), Democracy and Political Ignorance: Why Smaller Government is Smarter (Stanford University Press, revised and expanded second edition, 2016), and The Grasping Hand: Kelo v. City of New London and the Limits of Eminent Domain (University of Chicago Press, 2015, rev. paperback ed., 2016), coauthor of A Conspiracy Against Obamacare: The Volokh Conspiracy and the Health Care Case (Palgrave Macmillan, 2013), and co-editor of Eminent Domain: A Comparative Perspective (Cambridge University Press, 2017). Democracy and Political Ignorance has been translated into Italian and Japanese.
Somin’s work has appeared in numerous scholarly journals, including the Yale Law Journal, Stanford Law Review, Northwestern University Law Review, Georgetown Law Journal, Critical Review, and others. Somin has also published articles in a variety of popular press outlets, including the New York Times, Washington Post, Wall Street Journal, Los Angeles Times, CNN, NBC, The Atlantic, USA Today, Boston Globe, US News and World Report, South China Morning Post, National Law Journal and Reason. He has been quoted or interviewed by the New York Times, Washington Post, Wall Street Journal, Time, Newsweek, The Economist, the Christian Science Monitor, the Financial Times, The Guardian, the Associated Press, CBS, MSNBC, NPR, BBC, Reuters, the Canadian Broadcasting Corporation, the Australian Broadcasting Corporation, Radio Free Europe/Radio Liberty, Al Jazeera, and the Voice of America, among other media.
Somin’s writings have been cited in decisions by the United States Supreme Court, multiple state supreme courts and lower federal courts, and the Supreme Court of Israel. He is co-counsel for the plaintiffs in VOS Selections, Inc. v. Trump, a case challenging the constitutionality of President Trump’s “Liberation Day” tariffs. Somin has testified on the use of drones for targeted killing in the War on Terror before the US Senate Judiciary Subcommittee on the Constitution, Civil Rights, and Human Rights. In 2009, he testified on property rights issues at the United States Senate Judiciary Committee confirmation hearings for Supreme Court Justice Sonia Sotomayor. Somin writes regularly for the popular Volokh Conspiracy law and politics blog, now affiliated with Reason magazine (previously affiliated with the Washington Post from 2014 to 2017). From 2006 to 2013, he served as Co-Editor of the Supreme Court Economic Review, one of the country’s top-rated law and economics journals.
Somin has served as a visiting professor at the University of Pennsylvania Law School. He has also been a visiting professor or scholar at the Georgetown University Law Center, the University of Hamburg, Germany, the University of Torcuato Di Tella in Buenos Aires, Argentina, Uriel Reichman University in Israel, and Zhengzhou University in China. He is a University Affiliate of the Schar School of Policy and Government at George Mason University, and an affiliated faculty member of the George Mason University Institute for Immigration Research. Before joining the faculty at George Mason, Somin was the John M. Olin Fellow in Law at Northwestern University Law School in 2002-2003. In 2001-2002, he clerked for the Hon. Judge Jerry E. Smith of the U.S. Court of Appeals for the Fifth Circuit. Professor Somin earned his B.A., Summa Cum Laude, at Amherst College, M.A. in Political Science from Harvard University, and J.D. from Yale Law School.
Senior Fellow and Director of Constitutional Studies, Manhattan Institute
Ilya Shapiro is a senior fellow and director of constitutional studies at the Manhattan Institute and a contributing editor of City Journal. Previously he was executive director and senior lecturer at the Georgetown Center for the Constitution, and before that a vice president of the Cato Institute.
Shapiro is the author of Lawless: The Miseducation of America’s Elites (2025) and Supreme Disorder: Judicial Nominations and the Politics of America’s Highest Court (2020), coauthor of Religious Liberties for Corporations? (2014), and editor of 11 volumes of the Cato Supreme Court Review (2008-18). He has contributed to a variety of academic, popular, and professional publications, including the Wall Street Journal, Harvard Journal of Law & Public Policy, Washington Post, Los Angeles Times, USA Today, National Review, and Newsweek. He also regularly provides commentary for various media outlets, writes the Shapiro’s Gavel newsletter on Substack, and once appeared on the Colbert Report.
Shapiro has testified many times before Congress and state legislatures and has filed more than 500 amicus curiae “friend of the court” briefs in the Supreme Court. He lectures regularly on behalf of the Federalist Society, is a member of the board of fellows of the Jewish Policy Center, was an inaugural Washington Fellow at the National Review Institute, and has been an adjunct law professor at the George Washington University and University of Mississippi. He is also the chairman of the board of advisers of the Mississippi Justice Institute, a barrister in the Edward Coke Appellate Inn of Court, and a former member of the Virginia Advisory Committee to the U.S. Commission on Civil Rights.
Earlier in his career, Shapiro was a special assistant/adviser to the Multi-National Force in Iraq on rule-of-law issues and practiced at Patton Boggs and Cleary Gottlieb. Before entering private practice, he clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. He holds an AB from Princeton University, an MSc from the London School of Economics, and a JD from the University of Chicago Law School.
Senior Fellow and Director of Constitutional Studies, Manhattan Institute
Ilya Shapiro is a senior fellow and director of constitutional studies at the Manhattan Institute and a contributing editor of City Journal. Previously he was executive director and senior lecturer at the Georgetown Center for the Constitution, and before that a vice president of the Cato Institute.
Shapiro is the author of Lawless: The Miseducation of America’s Elites (2025) and Supreme Disorder: Judicial Nominations and the Politics of America’s Highest Court (2020), coauthor of Religious Liberties for Corporations? (2014), and editor of 11 volumes of the Cato Supreme Court Review (2008-18). He has contributed to a variety of academic, popular, and professional publications, including the Wall Street Journal, Harvard Journal of Law & Public Policy, Washington Post, Los Angeles Times, USA Today, National Review, and Newsweek. He also regularly provides commentary for various media outlets, writes the Shapiro’s Gavel newsletter on Substack, and once appeared on the Colbert Report.
Shapiro has testified many times before Congress and state legislatures and has filed more than 500 amicus curiae “friend of the court” briefs in the Supreme Court. He lectures regularly on behalf of the Federalist Society, is a member of the board of fellows of the Jewish Policy Center, was an inaugural Washington Fellow at the National Review Institute, and has been an adjunct law professor at the George Washington University and University of Mississippi. He is also the chairman of the board of advisers of the Mississippi Justice Institute, a barrister in the Edward Coke Appellate Inn of Court, and a former member of the Virginia Advisory Committee to the U.S. Commission on Civil Rights.
Earlier in his career, Shapiro was a special assistant/adviser to the Multi-National Force in Iraq on rule-of-law issues and practiced at Patton Boggs and Cleary Gottlieb. Before entering private practice, he clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. He holds an AB from Princeton University, an MSc from the London School of Economics, and a JD from the University of Chicago Law School.
Senior Fellow and Director of Constitutional Studies, Manhattan Institute
Ilya Shapiro is a senior fellow and director of constitutional studies at the Manhattan Institute and a contributing editor of City Journal. Previously he was executive director and senior lecturer at the Georgetown Center for the Constitution, and before that a vice president of the Cato Institute.
Shapiro is the author of Lawless: The Miseducation of America’s Elites (2025) and Supreme Disorder: Judicial Nominations and the Politics of America’s Highest Court (2020), coauthor of Religious Liberties for Corporations? (2014), and editor of 11 volumes of the Cato Supreme Court Review (2008-18). He has contributed to a variety of academic, popular, and professional publications, including the Wall Street Journal, Harvard Journal of Law & Public Policy, Washington Post, Los Angeles Times, USA Today, National Review, and Newsweek. He also regularly provides commentary for various media outlets, writes the Shapiro’s Gavel newsletter on Substack, and once appeared on the Colbert Report.
Shapiro has testified many times before Congress and state legislatures and has filed more than 500 amicus curiae “friend of the court” briefs in the Supreme Court. He lectures regularly on behalf of the Federalist Society, is a member of the board of fellows of the Jewish Policy Center, was an inaugural Washington Fellow at the National Review Institute, and has been an adjunct law professor at the George Washington University and University of Mississippi. He is also the chairman of the board of advisers of the Mississippi Justice Institute, a barrister in the Edward Coke Appellate Inn of Court, and a former member of the Virginia Advisory Committee to the U.S. Commission on Civil Rights.
Earlier in his career, Shapiro was a special assistant/adviser to the Multi-National Force in Iraq on rule-of-law issues and practiced at Patton Boggs and Cleary Gottlieb. Before entering private practice, he clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. He holds an AB from Princeton University, an MSc from the London School of Economics, and a JD from the University of Chicago Law School.
Vice President for Legal Affairs, Cato Institute
Roger Pilon is the Cato’s Institute’s vice president for legal affairs, the founding director of Cato’s Robert A. Levy Center for Constitutional Studies, the inaugural holder of Cato’s B. Kenneth Simon Chair in Constitutional Studies, and the founding publisher of the Cato Supreme Court Review.
Prior to joining Cato, Pilon held five senior posts in the Reagan administration, including at State and Justice, and was a national fellow at Stanford’s Hoover Institution. In 1989 the Bicentennial Commission presented him with its Benjamin Franklin Award for excellence in writing on the U.S. Constitution. In 2001 Columbia University’s School of General Studies awarded him its Alumni Medal of Distinction. Pilon lectures and debates at universities and law schools across the country and testifies often before Congress.
His writing has appeared in the Wall Street Journal, the Washington Post, the New York Times, the Los Angeles Times, Legal Times, National Law Journal, Harvard Journal of Law and Public Policy, Stanford Law and Policy Review, and elsewhere. He has appeared on ABC’s Nightline, CBS’s 60 Minutes II, Fox News Channel, NPR, CNN, MSNBC, CNBC, C-SPAN, and other media.
Pilon holds a BA from Columbia University, an MA and a PhD from the University of Chicago, and a JD from the George Washington University School of Law.
Senior Fellow and Director of Constitutional Studies, Manhattan Institute
Ilya Shapiro is a senior fellow and director of constitutional studies at the Manhattan Institute and a contributing editor of City Journal. Previously he was executive director and senior lecturer at the Georgetown Center for the Constitution, and before that a vice president of the Cato Institute.
Shapiro is the author of Lawless: The Miseducation of America’s Elites (2025) and Supreme Disorder: Judicial Nominations and the Politics of America’s Highest Court (2020), coauthor of Religious Liberties for Corporations? (2014), and editor of 11 volumes of the Cato Supreme Court Review (2008-18). He has contributed to a variety of academic, popular, and professional publications, including the Wall Street Journal, Harvard Journal of Law & Public Policy, Washington Post, Los Angeles Times, USA Today, National Review, and Newsweek. He also regularly provides commentary for various media outlets, writes the Shapiro’s Gavel newsletter on Substack, and once appeared on the Colbert Report.
Shapiro has testified many times before Congress and state legislatures and has filed more than 500 amicus curiae “friend of the court” briefs in the Supreme Court. He lectures regularly on behalf of the Federalist Society, is a member of the board of fellows of the Jewish Policy Center, was an inaugural Washington Fellow at the National Review Institute, and has been an adjunct law professor at the George Washington University and University of Mississippi. He is also the chairman of the board of advisers of the Mississippi Justice Institute, a barrister in the Edward Coke Appellate Inn of Court, and a former member of the Virginia Advisory Committee to the U.S. Commission on Civil Rights.
Earlier in his career, Shapiro was a special assistant/adviser to the Multi-National Force in Iraq on rule-of-law issues and practiced at Patton Boggs and Cleary Gottlieb. Before entering private practice, he clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. He holds an AB from Princeton University, an MSc from the London School of Economics, and a JD from the University of Chicago Law School.
Senior Fellow and Director of Constitutional Studies, Manhattan Institute
Ilya Shapiro is a senior fellow and director of constitutional studies at the Manhattan Institute and a contributing editor of City Journal. Previously he was executive director and senior lecturer at the Georgetown Center for the Constitution, and before that a vice president of the Cato Institute.
Shapiro is the author of Lawless: The Miseducation of America’s Elites (2025) and Supreme Disorder: Judicial Nominations and the Politics of America’s Highest Court (2020), coauthor of Religious Liberties for Corporations? (2014), and editor of 11 volumes of the Cato Supreme Court Review (2008-18). He has contributed to a variety of academic, popular, and professional publications, including the Wall Street Journal, Harvard Journal of Law & Public Policy, Washington Post, Los Angeles Times, USA Today, National Review, and Newsweek. He also regularly provides commentary for various media outlets, writes the Shapiro’s Gavel newsletter on Substack, and once appeared on the Colbert Report.
Shapiro has testified many times before Congress and state legislatures and has filed more than 500 amicus curiae “friend of the court” briefs in the Supreme Court. He lectures regularly on behalf of the Federalist Society, is a member of the board of fellows of the Jewish Policy Center, was an inaugural Washington Fellow at the National Review Institute, and has been an adjunct law professor at the George Washington University and University of Mississippi. He is also the chairman of the board of advisers of the Mississippi Justice Institute, a barrister in the Edward Coke Appellate Inn of Court, and a former member of the Virginia Advisory Committee to the U.S. Commission on Civil Rights.
Earlier in his career, Shapiro was a special assistant/adviser to the Multi-National Force in Iraq on rule-of-law issues and practiced at Patton Boggs and Cleary Gottlieb. Before entering private practice, he clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. He holds an AB from Princeton University, an MSc from the London School of Economics, and a JD from the University of Chicago Law School.
Counsel to Commissioner Hester M. Peirce, U.S. Securities and Exchange Commission
Thaya Brook Knight was associate director of financial regulation studies at the Cato Institute. She is an attorney with extensive experience in securities regulation, small business capital access, and capital markets. Before joining Cato, she co-founded and served as general counsel of CrowdCheck, a company providing due diligence and disclosure services in the online investing market. Following the recent financial crisis, she served as investigative counsel for the congressional oversight panel charged with overseeing the expenditure of Troubled Asset Relief Program funds. She also spent several years with the Washington office of the law firm WilmerHale, where her practice focused on securities litigation, securities enforcement defense, and corporate investigations.
She holds a BA from Middlebury College and a JD from the University of Michigan Law School.
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