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Dan Greenberg

Senior Research Fellow

Dan Greenberg is a senior research fellow at the Cato Institute. Previously, he was general counsel at the Competitive Enterprise Institute, where he headed the Institute’s public-interest litigation program and helped to overturn an unconstitutional federal law that criminalized home distillery. He also served as senior policy advisor at the U.S. Department of Labor from 2017–2021, where he focused on occupational regulation.

He has been an adjunct professor of law and political science at the University of Arkansas at Little Rock as well as senior counsel for the Center for Class Action Fairness. He served in the Arkansas House of Representatives from 2007–2011, and on the Pulaski County Quorum Court for four years prior to that. As a state legislator, he received National Review’s “2010 Challenge / Best Conservative Idea” award for his work on federalism issues as well as the Arkansas Press Association’s Freedom of Information Award for his work on First Amendment issues.

He has published extensively on government and public policy in newspapers, magazines, and academic journals, including the New York Times, the Monist, the Australian Journal of Political Science, the John Marshall Law Review, the Ohio State Law Journal, and National Review. He is also the producer of the documentary American Libel, a semi-autobiographical account of the law of defamation after New York Times v. Sullivan. He holds degrees from Brown University, Bowling Green State University, and UALR’s Bowen School of Law.

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