Panelist, “Horizontal Separation of Powers,” Florida International University Law Review Separation of Powers Symposium, Florida International University School of Law, March 11, 2016.


“Restoring Chevron’s Domain,” Missouri Law Review conference, “Beyond the Administrative State,” University of Missouri School of Law, Columbia, Missouri, March 3, 2016.


Panelist, “Threats to Commercial Speech,” Brooklyn Journal of Law & Policy Conference on “Free Speech Under Fire,” Brooklyn Law School, February 26, 2016.


“From Delegation to Abdication,” Conference on “New Challenges to Constitutional Law,” Center for Political Thought and Leadership, Arizona State University, Tempe, AZ, February 19, 2016.


“Of Kings to Come: The Future of Health Care Reform Still Remains in Federal Court,” Section on Employee Benefits and Executive Compensation, 110th Association of American Law Schools Annual Meeting, New York, NY, January 9, 2016.


Moderator, “Upward Redistribution, Government Policy, and Rent Seeking,” 18th Annual Faculty Conference of the Federalist Society for Law and Public Policy Studies, New York, NY, January 8, 2016.


Discussant, “Commandeering the Climate,” Eighth Annual Transatlantic Law Forum, George Mason University School of Law, Arlington, Virginia, October 24, 2015.


Panelist, “John Roberts and Statutory Interpretation,” Conference on “Ten Years the Chief: Examining a Decade of John Roberts on the Supreme Court,” Cardozo Law Review and the Floersheimer Center for Constitutional Democracy, Cardozo Law School, New York, NY, October 15, 2015.


Obergefell v. Hodges: Same-sex Marriage and the Supreme Court,” Center for the Study of American Democracy, Kenyon College, Gambier, Ohio, October 10, 2015.


“Federalism and Environmental Protection,” 2015 Ohio Attorney General’s Office Staff Retreat, Mount Sterling, Ohio, April 22, 2015.


“Conservative Conservation: Property Rights & Environmental Protection,” Annual Stranahan Lecture, University of Toledo College of Law, Toledo, Ohio, March 25, 2015.


Panelist, “King v. Burwell,” Affordable Care Act after Five Years, NYU Journal of Law & Liberty and Classical Liberal Institute, NYU School of Law, New York, New York, March 10, 2015.


Panelist, “Without Standing Are We All Sitting Ducks?” National Lawyers’ Convention, Federalist Society for Law & Public Policy Studies, Washington, D.C., November 15 2014.


Panelist, “King v. Burwell,” Yale Law School, New Haven, Connecticut, November 11, 2014.


Panelist, “Pruitt, Halbig, King & Indiana: Is ObamaCare Once Again Headed to the Supreme Court?” Cato Institute, Washington, D.C., October 31, 2014.


“Federal Environmental Regulation Reconsidered,” Annual Classical Liberalism Lecture, Whitman College, Walla Walla, Washington, October 22, 2014.


“Dynamic Environmentalism and Adaptive Management: Obstacles and Opportunities,” PERC-LEC Roundtable, George Mason University School of Law, Arlington, Virginia, October 9, 2014.


“Is the Affordable Care Act in Jeopardy? The Continuing Legal Challenges to the ACA and its Implementation,” Inaugural Case Health Policy Lecture, Weatherhead Institute of Family Medicine & Community Health and Case Western Reserve University School of Medicine, August 27, 2014.


Panelist, “Policy without Process,” Second Annual Executive Branch Review Conference, Federalist Society for Law & Public Policy Studies, Washington, D.C., May 7, 2014.


“The Conflict of Visions in NFIB v. Sebelius,” Drake University Constitutional Law Center 2014 Constitutional Law Symposium on “The U.S. Supreme Court’s Obamacare Decision and Its Significance for the 50th Anniversary of LBJ’s Great Society,” April 12, 2014.


Panelist, “Affordable Care Act Town Hall,” National Constitution Center, Philadelphia, Pennsylvania, January 21, 2014.


“Climate Balkanization: Dormant Commerce and the Limits of State Energy Policy,” Lone Mountain Forum on “Energy Policy: Political, Legal, and Economic Issues,” Property and Environment Research Center, Big Sky, Montana, December 6, 2013.


“Compelled Commercial Speech and the Consumer Right to Know” Faculty Workshop, University of Minnesota Law School, Minneapolis, Minnesota, November 21, 2013.


“The Clean Air Act, Greenhouse Gasses, and Cooperative Federalism,” Second Annual Searle Center Conference on Federalism and Energy, Northwestern University, November 14, 2013.


“Robert Bork and Commercial Speech,” Tenth Anniversary Symposium of the Journal of Law, Economics, and Policy, co-sponsored with the Law and Economics Center at George Mason University School of Law, Arlington, Virginia, November 8, 2013.


“The Affordable Care Act, One Year Later,” Southeastern Association of Law Schools Annual Conference, Palm Beach, Florida, August 9, 2013.


“Implementing the Affordable Care Act” First Annual Executive Branch Project Conference, Federalist Society for Law and Public Policy Studies, Washington, D.C., June 11, 2013.


“The Firm, the Environment, and the Law,” Research Roundtable on Austrian Law and Economics at the George Mason University School of Law, Arlington, VA, April 25, 2013.


“Making Sense of the Supreme Court” City Club of Cleveland, Cleveland, Ohio, February 13, 2013


“Free & Green: Property Rights and Markets for Environmental Protection,” Annual Rogge Memorial Lecture, Wabash College, Crawfordsville, Indiana, Nov. 1, 2012.


“The Future of Health Care Reform Is Still in Federal Court,” Conference on “The Future of Health Care Reform in the U.S.,”  Institute for Law and Economics, University of Chicago School of Law, Oct. 12, 2012.


“Judicial Minimalism, the Mandate, and Mr. Roberts,” Conference on “The Health Care Case: The Supreme Court’s Decision and Its Implications,” Columbia Law School, Sept. 28, 2012.


“Free Market Principles for Environmental Reform,” Conference on “Conservative Visions of Our Environmental Future,” Duke University, Sept. 25, 2012.


“Wetlands, Property Rights, and the Due Process Deficit in Environmental Law,” Symposium on “The Supreme Court: Past and Prologue—A Look at the October 2011 and 2012 Terms,” Cato Institute, Washington, D.C., Sept. 18, 2012.


“The Problems with Precaution: A Principle without Principle,” at the University of Maine at Machias, Sept. 13, 2012.


Panelist, “Global Warming and Political Cooling: Addressing Climate Change on Many Fronts,” 2012 National Convention of the American Constitution Society for Law and Policy, Washington, D.C., June 15, 2012.


Panelist, “Crisis in the Courts: The New White House Push on Judicial Confirmations and the Vacancy Rate’s Impact on Justice,” Cleveland-Marshall School of Law, May 31, 2012


Panelist, “Free Market Approaches to Climate Change” Federalist Society student chapter at Stanford Law School, April 18, 2012.


“Eyes on a Climate Prize: Rewarding Energy Innovation to Achieve Climate Stabilization,” Environmental Law and Policy Annual Review Conference, Washington, D.C., April 13, 2012.


Participant, 28th Annual Jefferson B. Fordham Debate, “Resolved: The Individual Mandate Provision of the PPACA is Constitutional,” University of Utah S.J. Quinney College of Law, February 6, 2012.


“Compelled Commercial Speech and the Consumer Right to Know” University of North Carolina School of Law Faculty Workshop, February 2, 2012.


“Water Rights, Markets, and Changing Ecological Conditions,” Environmental Law Symposium on 21st Century Water Law, Lewis & Clark Law School, Portland, Oregon, October 7, 2011.


“The Supreme Court Disposes of a Nuisance Suit: American Electric Power v. Connecticut,” at 10th Annual Constitution Day symposium, Cato Supreme Court Review, Washington, D.C., September 15, 2011


“Climate Change Goes Back to Court,” Conference on Terrorism, Climate, & Central Planning: Challenges to Liberty and the Rule of Law, Foundation for Research on Economics and the Environment, Big Sky, Montana, August 31, 2011.


“The Firm, the Environment, and the Law,” workshop at the Property and Environment Research Center in Bozeman, MT, August 3, 2011.


Panelist, “A New Wavelength? Carbon Tax, Cap & Trade, and Market Adaptation,” Canada-U.S. Law Institute annual conference on “Energy Security and Climate Change: A Canada-U.S. Common Approach?” CWRU School of Law, April 15, 2011.


“Health Care Reform and the Future of Federalism,” Federalist Society Birmingham Lawyers Chapter, Birmingham, AL, March 1, 2011.


Panelist, “Federalism and Interstate Competition,” 30th Annual Federalist Society Student Symposium on “Capitalism, Markets, and the Constitution,” University of Virginia, February 26, 2011.


“Cooperation, Commandeering, or Crowding Out? Federal Intervention and State Choices in Health Care Policy,” Kansas Journal of Law and Public Policy symposium on “The Role of States in Federal Health Care Reform,” University of Kansas School of Law, February 11, 2011.


“Alternatives to Cap and Trade,” Federalist Society Student Chapter, Environmental Law Society, and Harvard Environmental Law Review, Harvard Law School, February 3, 2011.


Panelist, “The Judicial Vacancy Crisis,” Federal Bar Association, Northern Ohio Chapter, November 18, 2010.


Panelist, Regulating from Nowhere: Environmental Law & the Search for Objectivity by Douglas Kysar, American Constitution Society, Washington, D.C., November 4, 2010.


“Is the Common Law the Free Market Solution to Pollution?” Workshop on “Tough Questions for Free-Market Environmentalism,” Property & Environment Research Center, Bozeman, Montana, July 20, 2010.


Panelist, “Environmental Protection in a Climate of Change,” American Constitution Society 2010 Annual Convention, Washington, D.C., June 18, 2010.


Panelist, “The Global Warming Crisis: Property Law,” AALS Mid-Year Meeting Workshop on Property, New York, NY, June 12, 2010.


“Environmental Law and the U.S. Supreme Court,” Ohio State Bar Association’s 25th Annual Ohio Environmental Law Seminar in Newark, OH, April 30, 2010


“The Cuyahoga, the Common Law & Environmental Protection,” Judicial Symposium on the Expansion of Liability Under Public Nuisance, Searle Center Judicial Education Program, Northwestern University Law School, Chicago, IL, April 26, 2010.


“To Cap or Not to Cap,” a debate with Yale law professor Douglas Kysar on federal regulation of greenhouse gases, Federalist Society Student Chapter, Yale Law School, New Haven, CT, April 8, 2010.


“Eyes on a Climate Prize: Rewarding Energy Innovation to Achieve Climate Stabilization,” Workshop on “Rethinking the Foundations of Climate Change Law and Policy,” University of Pennsylvania Law School, Philadelphia, PA, October 23, 2009.


“Public Lands & Public Choice,” “Free Market Environmentalism and Institutions of Liberty,” PERC and Liberty Fund Inc, Bozeman, MT, June 17, 2009.


“A Conversation on Climate Change Policy: A Look Ahead at 2009,” with Michael Vandenbergh, Vanderbilt Climate Change Research Network & Nashville Lawyers Chapter of the Federalist Society for Law & Policy Studies, February 19, 2009.


“Standing Still in the Roberts Court,” Case Western Reserve Law Review symposium on “Access to the Courts in the Roberts Era,” Case Western Reserve University School of Law, January 30, 2009.


“The Roberts Courts and Business: A Look at the Environmental Cases,” Santa Clara Law Review symposium on “Big Business and the Roberts Court,” Santa Clara University School of Law, January 23, 2009.


“A More Modest Court: The Ohio Supreme Court’s Newfound Judicial Restraint,” Cleveland Area Civil Trial Attorneys, December 10, 2008.


“The Policy Implications of Reaction to Climate Change,” National Lawyers Convention of the Federalist Society for Law & Public Policy Studies, November 20, 2008.


“Compelled Commercial Speech and the Consumer Right-to-Know,” Penn State University Dickinson School of Law, State College, PA, September 19, 2008.


Comment, “Viewpoint Diversity and Media Consolidation: An Empirical Study,” 3rd Annual Conference on Empirical Legal Studies, Cornell Law School, Ithaca, NY, September 13, 2008.


“Taking Property Rights Seriously: The Case of Climate Change,” Social Philosophy and Policy Center/Liberty Fund conference, “Liberty and the Environment,” Orlando, FL, June 20, 2008


“Federalism in the Roberts Court,” Conference on Constitutional Law, 2008 AALS Mid-Year Meeting, Cleveland, Ohio, June 4, 2008.


“From Marshall to Scalia: The Role of the Courts in American History,” Bill of Rights Institute, Wichita, Kansas, April 24, 2008.


“From Guns to Guantanamo: A Guide to Life in the Roberts Court Era,” Akron Press Club, Akron, Ohio, April 14, 2008.


“Reforming Our Wasteful Hazardous Waste Policy,” Breaking the Logjam: An Environmental Law for the 21st Century, NYU School of Law, March 29, 2008.


“God, Gaia, The Taxpayer, and The Lorax: Standing, Justiciability, and Separation of Powers after Massachusetts and Hein,” Keynote Address, Regent Law Review Symposium on Justiciability After Hein and Massachusetts: Where is the Court Standing?, Virginia Beach, VA, Nov. 30, 2007


“Reforming Our Wasteful Hazardous Waste Policy,” Environmental Governance Seminar, New York University School of Law (co-sponsored by New York Law School), New York, NY, Nov. 28, 2007.


“Water Markets as an Adaptive Response to the Threat of Climate Change,” Nevada Water Resources Association, Las Vegas, NV, Nov. 5, 2007.


Comment, “The Complex Climate Change Incentives of China and the United States” by Cass Sunstein, Conference on Cost-Benefit Analysis of Regulations: Lessons Learned, Future Challenges,” sponsored by the Searle Center at the Northwestern University School of Law, Oct. 12, 2007.


“Global Warming and Other Hot Topics,” Annual Convention, American Constitution Society for Law and Policy, Washington, DC, July 27, 2007.


“Money or Nothing: The Adverse Environmental Consequences of Uncompensated Regulatory Takings,” Symposium on Takings: The Uses and Abuses of Eminent Domain and Land Use Regulation,” Florida State University, April 21, 2007.


Panelist, “Massachusetts v. EPA Preview,” American Enterprise Institute, Washington, D.C., November 21, 2006.


“Jurisdictional Matching in Environmental Federalism,” Environmental Federalism: States, NGOs, and Environmental Quality for State Officials, Foundation for Research on Economics and the Environment and Montana State University, Bozeman, Montana, July 18, 2006.


“The Fable of Federal Regulation,” Skeptics Society Annual Conference, California Institute of Technology, Pasadena, CA, June 3, 2006.


“Blogging and Privacy,” Annual Computers, Freedom & Privacy Conference, Washington, D.C., May 4, 2006.


“Running on Empty – Energy in the 21st Century,” Research ShowCASE, Case Western Reserve University, Cleveland, Ohio, April 5, 2006.


“Institutional Mismatch in Environmental Federalism,” New York University Environmental Law Journal 2005 Colloquium on State Roles in U.S. Environmental Law and Policy, New York, N.Y. March 25, 2005.


“How to Protect Environmental Protections” Environmental Law Institute, American Constitution Society, and Center for American Progress, Washington, D.C., March 24, 2005.


“Why States Regulate: The Impact of Federal Action on State Environmental Regulatory Choices,” Faculty Workshop, George Mason University School of Law, Arlington, Virginia, January 19, 2005


“Speech: Protected and Unprotected,” Collegiate Network 25th Anniversary Student Editors Conference, Washington, D.C., December 4, 2004


Discussant, “The Election Is Over . . . Now What?” Third Annual Louis Stokes Leadership Symposium on Social Issues and the Community, Case Western Reserve University, Cleveland, Ohio, November 30, 2004.


“Conservation through Collusion: Antitrust as an Obstacle to Marine Resource Conservation,” Annual Meeting, Southern Economic Association, New Orleans, Louisiana, November 21, 2004.


“Wetland Federalism: Why States Regulate,” Faculty Workshop, Florida State University School of Law, Tallahassee, Florida, October 19, 2004.


“The Fables of Federal Regulation: Revisiting the Causes and Consequences of Environmental Centralization,” Mont Pelerin Society Annual Meeting, Salt Lake City, Utah, August 16, 2004.


“The Common Law and Environmental Protection,” Kinship Conservation Institute, Bozeman Montana, June 7, 2004.


“Frank Meyer, Fusionism, and Federalism,” Publius Symposium on Conservatives and Federalism, Washington, D.C., May 21, 2004


“Judicial Federalism and the Future of Federal Environmental Regulation,” Faculty Workshop, University of Pittsburgh School of Law, Pittsburgh, Pennsylvania, February 26, 2004.


Panelist, “The Constitutional Limits of Federal Environmental Protection,” Federalist Society National Lawyers’ Convention, Washington, D.C., November 14, 2003.


Panelist, “The Bush Administration’s Environmental Record,” Harvard Environmental Law Conference, Harvard Law School, Cambridge, Massachusetts, November 6, 2003.


“Terrorism and the Environmental Right-to-Know,” Terrorism, Energy Security, and Civil Liberties – A Seminar for Federal Judges, Foundation for Research on Economics and the Environment, Bozeman, Montana, August 5-10, 2003.


Panelist, “The Erosion of Environmental Protection?” American Constitution Society National Convention, Washington, D.C., August 1, 2003.


“Constitutional Limitations on Mandatory Labeling of Biotech Foods,” Journal of Law & Technology Symposium, University of Richmond School of Law, Richmond, Virginia, March 14, 2003.


“Let 50 Flowers Bloom: Transforming States into Laboratories of Environmental Policy, Congressional staff seminar, Cato Institute, Washington, D.C., December 13, 2002.


“The Precautionary Principle: More Sorry, Less Safe,” Congressional staff seminar, Political Economy Research Center, Washington, D.C., September 13, 2002.


“Conservation through Collusion: Antitrust Barriers to Cooperative Fishery Management,” Faculty Workshop, University of San Diego School of Law, March 1, 2002.


“Let Fifty Flowers Bloom: Transforming the States into Laboratories of Environmental Policy,” American Enterprise Institute, Washington, D.C., September 20, 2001.


“Environmental Federalism,” Environmental Economics and Policy Analysis – A Seminar for Law Professors, Foundation for Research on Economics and the Environment, Bozeman, Montana, July 12-14, 2001.


“International Environmental Regulation and the Precautionary Principle,” Roundtable on International Trade, International Council on Metals and the Environment, July 17-18, 2001.