Senior Vice President for Legal Studies, Cato Institute
Clark Neily is senior vice president for legal studies at the Cato Institute. His areas of interest include constitutional law, overcriminalization, civil forfeiture, police accountability, and gun rights. Neily is the author of Terms of Engagement: How Our Courts Should Enforce the Constitution’s Promise of Limited Government. His writing has appeared in the Wall Street Journal, Forbes, and National Review Online, as well as various law reviews, including the Harvard Journal of Law and Public Policy, George Mason Law Review, Georgetown Journal of Law and Public Policy, NYU Journal of Law and Liberty, and Texas Review of Law and Politics. Neily is a frequent guest speaker and lecturer for the Federalist Society, Institute for Humane Studies, and American Constitution Society.
Before joining Cato in 2017, Neily was a senior attorney and constitutional litigator at the Institute for Justice and director of the Institute’s Center for Judicial Engagement. He is also an adjunct professor at the University of Texas School of Law, where he teaches constitutional litigation and public-interest law.
Neily served as co-counsel in District of Columbia v. Heller, the historic case in which the Supreme Court held for the first time that the Second Amendment protects an individual right to own a gun for self-defense.
Neily began his legal career as a law clerk to Judge Royce Lamberth on the U.S. District Court for the District of Columbia. After that he spent four years in the trial department of the Dallas-based firm Thompson & Knight. Neily received his undergraduate and law degrees from the University of Texas, where he was Chief Articles Editor of the Texas Law Review.
Senior Vice President for Legal Studies, Cato Institute
Clark Neily is senior vice president for legal studies at the Cato Institute. His areas of interest include constitutional law, overcriminalization, civil forfeiture, police accountability, and gun rights. Neily is the author of Terms of Engagement: How Our Courts Should Enforce the Constitution’s Promise of Limited Government. His writing has appeared in the Wall Street Journal, Forbes, and National Review Online, as well as various law reviews, including the Harvard Journal of Law and Public Policy, George Mason Law Review, Georgetown Journal of Law and Public Policy, NYU Journal of Law and Liberty, and Texas Review of Law and Politics. Neily is a frequent guest speaker and lecturer for the Federalist Society, Institute for Humane Studies, and American Constitution Society.
Before joining Cato in 2017, Neily was a senior attorney and constitutional litigator at the Institute for Justice and director of the Institute’s Center for Judicial Engagement. He is also an adjunct professor at the University of Texas School of Law, where he teaches constitutional litigation and public-interest law.
Neily served as co-counsel in District of Columbia v. Heller, the historic case in which the Supreme Court held for the first time that the Second Amendment protects an individual right to own a gun for self-defense.
Neily began his legal career as a law clerk to Judge Royce Lamberth on the U.S. District Court for the District of Columbia. After that he spent four years in the trial department of the Dallas-based firm Thompson & Knight. Neily received his undergraduate and law degrees from the University of Texas, where he was Chief Articles Editor of the Texas Law Review.
Senior Vice President for Legal Studies, Cato Institute
Clark Neily is senior vice president for legal studies at the Cato Institute. His areas of interest include constitutional law, overcriminalization, civil forfeiture, police accountability, and gun rights. Neily is the author of Terms of Engagement: How Our Courts Should Enforce the Constitution’s Promise of Limited Government. His writing has appeared in the Wall Street Journal, Forbes, and National Review Online, as well as various law reviews, including the Harvard Journal of Law and Public Policy, George Mason Law Review, Georgetown Journal of Law and Public Policy, NYU Journal of Law and Liberty, and Texas Review of Law and Politics. Neily is a frequent guest speaker and lecturer for the Federalist Society, Institute for Humane Studies, and American Constitution Society.
Before joining Cato in 2017, Neily was a senior attorney and constitutional litigator at the Institute for Justice and director of the Institute’s Center for Judicial Engagement. He is also an adjunct professor at the University of Texas School of Law, where he teaches constitutional litigation and public-interest law.
Neily served as co-counsel in District of Columbia v. Heller, the historic case in which the Supreme Court held for the first time that the Second Amendment protects an individual right to own a gun for self-defense.
Neily began his legal career as a law clerk to Judge Royce Lamberth on the U.S. District Court for the District of Columbia. After that he spent four years in the trial department of the Dallas-based firm Thompson & Knight. Neily received his undergraduate and law degrees from the University of Texas, where he was Chief Articles Editor of the Texas Law Review.
Senior Vice President for Legal Studies, Cato Institute
Clark Neily is senior vice president for legal studies at the Cato Institute. His areas of interest include constitutional law, overcriminalization, civil forfeiture, police accountability, and gun rights. Neily is the author of Terms of Engagement: How Our Courts Should Enforce the Constitution’s Promise of Limited Government. His writing has appeared in the Wall Street Journal, Forbes, and National Review Online, as well as various law reviews, including the Harvard Journal of Law and Public Policy, George Mason Law Review, Georgetown Journal of Law and Public Policy, NYU Journal of Law and Liberty, and Texas Review of Law and Politics. Neily is a frequent guest speaker and lecturer for the Federalist Society, Institute for Humane Studies, and American Constitution Society.
Before joining Cato in 2017, Neily was a senior attorney and constitutional litigator at the Institute for Justice and director of the Institute’s Center for Judicial Engagement. He is also an adjunct professor at the University of Texas School of Law, where he teaches constitutional litigation and public-interest law.
Neily served as co-counsel in District of Columbia v. Heller, the historic case in which the Supreme Court held for the first time that the Second Amendment protects an individual right to own a gun for self-defense.
Neily began his legal career as a law clerk to Judge Royce Lamberth on the U.S. District Court for the District of Columbia. After that he spent four years in the trial department of the Dallas-based firm Thompson & Knight. Neily received his undergraduate and law degrees from the University of Texas, where he was Chief Articles Editor of the Texas Law Review.
Senior Vice President for Legal Studies, Cato Institute
Clark Neily is senior vice president for legal studies at the Cato Institute. His areas of interest include constitutional law, overcriminalization, civil forfeiture, police accountability, and gun rights. Neily is the author of Terms of Engagement: How Our Courts Should Enforce the Constitution’s Promise of Limited Government. His writing has appeared in the Wall Street Journal, Forbes, and National Review Online, as well as various law reviews, including the Harvard Journal of Law and Public Policy, George Mason Law Review, Georgetown Journal of Law and Public Policy, NYU Journal of Law and Liberty, and Texas Review of Law and Politics. Neily is a frequent guest speaker and lecturer for the Federalist Society, Institute for Humane Studies, and American Constitution Society.
Before joining Cato in 2017, Neily was a senior attorney and constitutional litigator at the Institute for Justice and director of the Institute’s Center for Judicial Engagement. He is also an adjunct professor at the University of Texas School of Law, where he teaches constitutional litigation and public-interest law.
Neily served as co-counsel in District of Columbia v. Heller, the historic case in which the Supreme Court held for the first time that the Second Amendment protects an individual right to own a gun for self-defense.
Neily began his legal career as a law clerk to Judge Royce Lamberth on the U.S. District Court for the District of Columbia. After that he spent four years in the trial department of the Dallas-based firm Thompson & Knight. Neily received his undergraduate and law degrees from the University of Texas, where he was Chief Articles Editor of the Texas Law Review.
Chairman and Founding General Counsel, Institute for Justice
William H. (Chip) Mellor serves as chairman and founding general counsel of the Institute for Justice, which he co-founded in 1991. He was IJ’s president and general counsel from 1991 to 2015. He has litigated cutting-edge constitutional cases nationwide protecting economic liberty, property rights, school choice and the First Amendment, notably achieving the first federal appellate court victory for economic liberty under the 14th Amendment since the New Deal by overturning Tennessee’s prohibition on retail casket sales.
Under Mellor’s leadership IJ pioneered a new approach to strategic public interest litigation that combines courtroom advocacy with award-winning media relations, activism and strategic research to secure constitutional protection for individual rights. He grew IJ from a five-person startup into the National Law Firm for Liberty with a staff of nearly 100, including over 40 attorneys, and an annual budget of $20 million. IJ is headquartered in Arlington, Virginia, and has offices in Arizona, Florida, Illinois, Minnesota, Texas and Washington state.
While Mellor was president, IJ litigated five U.S. Supreme Court cases, winning all but one: In Zelman v. Simmons-Harris, IJ successfully defended Cleveland’s school choice program from a lawsuit brought by the teachers’ unions and other school choice opponents, establishing the constitutionality of school vouchers. In Granholm v. Heald, the Supreme Court struck down New York’s ban on interstate wine sales, allowing small wineries and consumers represented by IJ to successfully challenge a government-imposed wholesale wine and liquor monopoly. In Kelo v. City of New London, the Supreme Court ruled against IJ in a controversial 5–4 decision that held private property can be taken for private development. IJ mobilized unprecedented public outrage over the decision to secure legislative reforms or state supreme court decisions in 46 states that strengthened protection for property rights. In Arizona Christian School Tuition Organization v. Winn, the Supreme Court dismissed an Establishment Clause challenge to Arizona’s scholarship tax credit program because the Court recognized that individuals who donate to private, nonprofit scholarship-granting organizations spend their own money—not state funds. In Arizona Freedom Club PAC v. Bennett, the Supreme Court struck down a key provision of Arizona’s system of government-funded campaigns, which showered money on campaigns that took government funding when privately financed and independent speakers opposing them spoke more than the government wanted.
Mellor co-authored with the Cato Institute’s Robert Levy The Dirty Dozen: How Twelve Supreme Court Cases Radically Expanded Government and Eroded Freedom, which examines 12 Supreme Court cases that effectively amended the Constitution and profoundly reshaped the role of government in America. In The Dirty Dozen, Mellor and Levy argue for judicial engagement and for a Supreme Court that will protect individual rights and restore limits on government power.
Mellor launched the Institute for Justice Clinic on Entrepreneurship at the University of Chicago in 1998 and IJ’s Center for Judicial Engagement in 2011.
Mellor’s work has appeared in the Wall Street Journal, Washington Post, New York Times, USA Today, Financial Times, Los Angeles Times, Chicago Tribune, Philadelphia Inquirer, Boston Globe, New York Post, National Law Journal, Reason, National Review, Investor’s Business Daily, and all the major television and radio networks. In a 2012 broadcast of his Fox Business show Stossel, John Stossel named Mellor a “Champion of Freedom.”
Prior to founding IJ, Mellor served as president of the Pacific Research Institute for Public Policy, a nationally recognized think tank located in San Francisco. Under his leadership, the Institute commissioned and published path-breaking books on economic liberty, property rights, and technology and the First Amendment that formed the long-term, strategic litigation blueprint for the Institute for Justice.
Mellor also served in the Reagan Administration as deputy general counsel for legislation and regulations in the Department of Energy, and from 1979 to 1983 he practiced public interest law with Mountain States Legal Foundation in Denver. Mellor received his J.D. from the University of Denver School of Law in 1977. He graduated from Ohio State University in 1973.
Read Mellor’s speech launching the Institute for Justice: “The Quest for Justice: Natural Rights and the Future of Public Interest Law.”
Mellor was awarded the Bradley Prize in 2012, was recognized by the American Bar Association as a Legal Rebel – an individual who remakes their corner of the legal profession – and was profiled in the Wall Street Journal Weekend Interview on January 7, 2012, as well as in Reason magazine in March 2008.
Judge, U.S. Court of Appeals, Fifth Circuit
Don Willett serves on the United States Court of Appeals for the Fifth Circuit.
Before joining the federal bench, Judge Willett served 13 years on the Supreme Court
of Texas. His career spans decades of public service, including roles as legal counsel to
a Texas Attorney General, a Texas Governor, a U.S. Attorney General, and the
President of the United States.
Raised by a heroic widowed mom in a doublewide trailer in a town of 32, Judge
Willett is his family’s first college graduate. He earned a triple-major B.B.A. from Baylor
University—where he serves on the Board of Regents—and three degrees from Duke
University—where he serves on the Board of Visitors: a J.D. with honors, an A.M. in
political science, and an LL.M. in judicial studies. After law school, he clerked on the
Fifth Circuit and practiced at Haynes and Boone before entering public service.
Judge Willett publishes widely in both leading law reviews and national media, including
The Yale Law Journal, The University of Pennsylvania Law Review, and The Wall Street
Journal. The longtime editor-in-chief of Judicature—the Scholarly Journal for Judges, he
holds academic appointments at various law schools and has received more than a
dozen Green Bag honors for “exemplary legal writing.” He was named Distinguished
Jurist of the Year by the Texas Review of Law & Politics, and he is a member of the
American Law Institute and a Life Fellow of the American, Texas, and Austin Bar
Foundations.
A onetime bull rider and professional drummer, Judge Willett was named “Tweeter
Laureate of Texas” in 2015. He is the namesake of Don R. Willett Elementary
School—home of mighty Willett Wranglers—located just a mile from where he grew up.
He and his radiant wife, Tiffany have three children—Jacob, Shane-David, and
Geneviève—plus the family pup, Amicus.
Senior Vice President for Legal Studies, Cato Institute
Clark Neily is senior vice president for legal studies at the Cato Institute. His areas of interest include constitutional law, overcriminalization, civil forfeiture, police accountability, and gun rights. Neily is the author of Terms of Engagement: How Our Courts Should Enforce the Constitution’s Promise of Limited Government. His writing has appeared in the Wall Street Journal, Forbes, and National Review Online, as well as various law reviews, including the Harvard Journal of Law and Public Policy, George Mason Law Review, Georgetown Journal of Law and Public Policy, NYU Journal of Law and Liberty, and Texas Review of Law and Politics. Neily is a frequent guest speaker and lecturer for the Federalist Society, Institute for Humane Studies, and American Constitution Society.
Before joining Cato in 2017, Neily was a senior attorney and constitutional litigator at the Institute for Justice and director of the Institute’s Center for Judicial Engagement. He is also an adjunct professor at the University of Texas School of Law, where he teaches constitutional litigation and public-interest law.
Neily served as co-counsel in District of Columbia v. Heller, the historic case in which the Supreme Court held for the first time that the Second Amendment protects an individual right to own a gun for self-defense.
Neily began his legal career as a law clerk to Judge Royce Lamberth on the U.S. District Court for the District of Columbia. After that he spent four years in the trial department of the Dallas-based firm Thompson & Knight. Neily received his undergraduate and law degrees from the University of Texas, where he was Chief Articles Editor of the Texas Law Review.
Managing Attorney of the Washington Office, Institute for Justice
William R. Maurer is the Managing Attorney of the Washington state office of the Institute for Justice, which engages in litigation in the areas of economic liberty, private property rights, educational choice, & freedom of speech.
Maurer is an advocate against the criminalization of poverty and the governmental use of the criminal and civil enforcement systems to raise revenue. He was lead counsel in a class action challenging the use of tickets to raise revenue in the city of Pagedale, Missouri. The suit resulted in a federal consent decree that reformed the city’s ticketing and municipal court system. He regularly speaks, teaches, and writes about the abuse of fines and fees in the criminal justice system. He was a participant in summits on taxation by citation put on by the White House and Department of Justice during the Obama Administration. His work on the issue includes serving as an advisory board member of the Fines and Fees Justice Center.
In addition to his work on criminal and civil justice reform, Maurer is a First Amendment litigator. In 2011, he successfully argued before the U.S. Supreme Court that Arizona’s punitive campaign financing regime was unconstitutional. Before the Washington Supreme Court, he successfully argued against efforts to classify radio commentary as a contribution under the state’s campaign finance law.
His cases and advocacy have been covered in the Washington Post, the New York Times, the Economist, the Wall Street Journal, and other major media outlets.
Maurer was named a “Washington Superlawyer” by Washington Law & Politics Magazine for several years. He is a chapter author in numerous legal reference works and has written several articles for law reviews and legal publications across the country.
Prior to joining IJ-WA, Maurer clerked for Washington Supreme Court Justice Richard Sanders and then practiced law at Perkins Coie LLP. Maurer received his law degree in 1994 from the University of Wisconsin – Madison, where he was an editor of the Wisconsin Law Review. He received his BA from Bard College in 1989.
General Counsel, Center for Individual Rights
Darpana Sheth joined CIR as General Counsel in May 2025. She is a nationally recognized constitutional litigator with over two decades of experience serving in in leadership roles at other nonprofit organizations.
Before joining CIR, Darpana served for four years as Vice President of Litigation for the Foundation for Individual Rights and Expression. Prior to that, Darpana was a Senior Attorney with the Institute for Justice, where she also served as Director of the Institute’s National Initiative to End Forfeiture Abuse.
Before finding her calling as a public-interest attorney, Darpana served as an Assistant Attorney General for the State of New York and worked in private practice as a litigation associate at the Manhattan law firm of Chadbourne & Parke, LLP. She also served as law clerk to the Honorable Jerome A. Holmes of the U.S. Court of Appeals for the Tenth Circuit.
A native of Philadelphia, Darpana graduated from the University of Pennsylvania with a Bachelor of Arts in Political Science and History. She earned her law degree from Georgetown University Law Center.
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