Director, Robert A. Levy Center for Constitutional Studies, Cato Institute
Thomas Berry is the director in the Cato Institute’s Robert A. Levy Center for Constitutional Studies and editor in chief of the Cato Supreme Court Review. Before joining Cato, he was an attorney at Pacific Legal Foundation and clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. His academic work has appeared in NYU Journal of Law and Liberty, Washington and Lee Law Review Online, and Federalist Society Review. His popular writing has appeared in The Wall Street Journal, National Law Journal, Investor’s Business Daily, National Review Online, and The Hill Online. He has testified before the U.S. Senate, and his work has been cited by the U.S. District Court for the District of Columbia.
Berry holds a J.D. from Stanford Law School, where he was a senior editor on the Stanford Law and Policy Review and a Bradley Student Fellow in the Stanford Constitutional Law Center. He graduated with a B.A. in Liberal Arts from St. John’s College, Santa Fe.
Partner, Boyden Gray PLLC
Jimmy Conde is partner at Boyden Gray PLLC, specializing in energy, environmental, and administrative law, with particular expertise in the Clean Air Act. He has protected clients against agency overreach in cutting-edge and complex legal proceedings, including challenges to EPA, DOE, DOT, and California rules seeking to compel electrification of motor vehicles, the FCC’s universal service fund, Department of Labor Wage & Hour Division rules, and HHS rules interfering with the practice of medicine and sound insurance practices. His written commentary has been published and referenced in the Wall Street Journal, the Washington Examiner, Concurrences (an antitrust publication), and Newsweek, among others.
Mr. Conde began his legal career as an associate with Boyden Gray PLLC. He clerked for Judge Douglas H. Ginsburg in the U.S. Court of Appeals for the D.C. Circuit and Judge David J. Porter in the U.S. Court of Appeals for the Third Circuit.
Associate Chief Counsel, U.S. Chamber Litigation Center, U.S. Chamber of Commerce
Maria C. Monaghan is associate chief counsel at the U.S. Chamber Litigation Center, the litigation arm of the U.S. Chamber of Commerce. In this capacity, she handles a variety of litigation matters for the Chamber.
Before joining the Litigation Center, Monaghan practiced as an associate in the D.C. office of Gibson, Dunn & Crutcher LLP. She represented clients in the telecommunications, energy, transportation, and e-commerce sectors, with a focus on appellate litigation and regulatory matters.
Monaghan served as a law clerk to the Honorable Samuel A. Alito of the United States Supreme Court, the Honorable Ed Carnes of the U.S. Court of Appeals for the Eleventh Circuit, and the Honorable Amul R. Thapar of the U.S. Court of Appeals for the Sixth Circuit. She graduated Order of the Coif from the University of Virginia School of Law, where she served as Articles Development Editor for the Virginia Law Review and participated in the Supreme Court Litigation Clinic. She received her undergraduate degree in Human Resource Management and Labor Studies from Rutgers University.
Senior Counsel, America First Legal
James Rogers is Senior Counsel at America First Legal Foundation, where he litigates in a number of areas, including border security, election integrity, parental rights, and administrative and constitutional law. Before joining America First Legal, from 2021 to 2022, he was Senior Litigation Counsel at the Solicitor General’s Office of the Arizona Attorney General’s Office. While there, he spearheaded lawsuits against the Biden Administration’s destructive open borders policies and its COVID19 vaccine mandates. From 2015 to 2021, James was a Foreign Service Officer at the U.S. Department of State, where he worked in the Office of the Assistant Legal Advisor for Consular Affairs, at the U.S. Consulate in Porto Alegre, Brazil, and at the U.S. Embassy in Windhoek, Namibia.
Prior to joining the Department of State, he was a commercial litigation partner at Osborn Maledon, a Phoenix-based firm with a #1 litigation ranking from Chambers and Partners. James earned a J.D. from Harvard Law School in 2009, an L.L.M. in International Law from the University of Cambridge in 2008, and a B.A., with honors, in International Studies from Brigham Young University in 2005. He is a sixth-generation Arizonan and lives in Mesa, Arizona, with his four children.
Partner, Marshall, Gerstein & Borun LLP
Ryan Schermerhorn is a registered patent attorney in the firm's Industrial & Mechanical Technologies Practice Group. His engineering background provides him with an understanding of clients’ technologies and enables him to effectively and efficiently provide a range of patent procurement services. He also leverages his experience to assist on intellectual property litigation as well as develop strategies for acquiring and protecting intellectual property.
Since 2017, Ryan has been listed as an "Emerging Lawyer" by Emerging Lawyers Magazine and has been selected for inclusion in the Illinois Rising Stars® lists. Ryan was recognized in Chicago Daily Law Bulletin's 2023 40 Under Forty list. Since 2024, Ryan has been selected for inclusion in The Best Lawyers in America© list in the practice areas of Litigation - Patent and Patent Law. In 2025, Ryan was selected by the Law Bulletin Publishing Company’s Leading Lawyer Network as a “Leading Lawyer.”
Director, Robert A. Levy Center for Constitutional Studies, Cato Institute
Thomas Berry is the director in the Cato Institute’s Robert A. Levy Center for Constitutional Studies and editor in chief of the Cato Supreme Court Review. Before joining Cato, he was an attorney at Pacific Legal Foundation and clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. His academic work has appeared in NYU Journal of Law and Liberty, Washington and Lee Law Review Online, and Federalist Society Review. His popular writing has appeared in The Wall Street Journal, National Law Journal, Investor’s Business Daily, National Review Online, and The Hill Online. He has testified before the U.S. Senate, and his work has been cited by the U.S. District Court for the District of Columbia.
Berry holds a J.D. from Stanford Law School, where he was a senior editor on the Stanford Law and Policy Review and a Bradley Student Fellow in the Stanford Constitutional Law Center. He graduated with a B.A. in Liberal Arts from St. John’s College, Santa Fe.
Partner, Boyden Gray PLLC
Jimmy Conde is partner at Boyden Gray PLLC, specializing in energy, environmental, and administrative law, with particular expertise in the Clean Air Act. He has protected clients against agency overreach in cutting-edge and complex legal proceedings, including challenges to EPA, DOE, DOT, and California rules seeking to compel electrification of motor vehicles, the FCC’s universal service fund, Department of Labor Wage & Hour Division rules, and HHS rules interfering with the practice of medicine and sound insurance practices. His written commentary has been published and referenced in the Wall Street Journal, the Washington Examiner, Concurrences (an antitrust publication), and Newsweek, among others.
Mr. Conde began his legal career as an associate with Boyden Gray PLLC. He clerked for Judge Douglas H. Ginsburg in the U.S. Court of Appeals for the D.C. Circuit and Judge David J. Porter in the U.S. Court of Appeals for the Third Circuit.
Associate Chief Counsel, U.S. Chamber Litigation Center, U.S. Chamber of Commerce
Maria C. Monaghan is associate chief counsel at the U.S. Chamber Litigation Center, the litigation arm of the U.S. Chamber of Commerce. In this capacity, she handles a variety of litigation matters for the Chamber.
Before joining the Litigation Center, Monaghan practiced as an associate in the D.C. office of Gibson, Dunn & Crutcher LLP. She represented clients in the telecommunications, energy, transportation, and e-commerce sectors, with a focus on appellate litigation and regulatory matters.
Monaghan served as a law clerk to the Honorable Samuel A. Alito of the United States Supreme Court, the Honorable Ed Carnes of the U.S. Court of Appeals for the Eleventh Circuit, and the Honorable Amul R. Thapar of the U.S. Court of Appeals for the Sixth Circuit. She graduated Order of the Coif from the University of Virginia School of Law, where she served as Articles Development Editor for the Virginia Law Review and participated in the Supreme Court Litigation Clinic. She received her undergraduate degree in Human Resource Management and Labor Studies from Rutgers University.
Senior Counsel, America First Legal
James Rogers is Senior Counsel at America First Legal Foundation, where he litigates in a number of areas, including border security, election integrity, parental rights, and administrative and constitutional law. Before joining America First Legal, from 2021 to 2022, he was Senior Litigation Counsel at the Solicitor General’s Office of the Arizona Attorney General’s Office. While there, he spearheaded lawsuits against the Biden Administration’s destructive open borders policies and its COVID19 vaccine mandates. From 2015 to 2021, James was a Foreign Service Officer at the U.S. Department of State, where he worked in the Office of the Assistant Legal Advisor for Consular Affairs, at the U.S. Consulate in Porto Alegre, Brazil, and at the U.S. Embassy in Windhoek, Namibia.
Prior to joining the Department of State, he was a commercial litigation partner at Osborn Maledon, a Phoenix-based firm with a #1 litigation ranking from Chambers and Partners. James earned a J.D. from Harvard Law School in 2009, an L.L.M. in International Law from the University of Cambridge in 2008, and a B.A., with honors, in International Studies from Brigham Young University in 2005. He is a sixth-generation Arizonan and lives in Mesa, Arizona, with his four children.
Partner, Marshall, Gerstein & Borun LLP
Ryan Schermerhorn is a registered patent attorney in the firm's Industrial & Mechanical Technologies Practice Group. His engineering background provides him with an understanding of clients’ technologies and enables him to effectively and efficiently provide a range of patent procurement services. He also leverages his experience to assist on intellectual property litigation as well as develop strategies for acquiring and protecting intellectual property.
Since 2017, Ryan has been listed as an "Emerging Lawyer" by Emerging Lawyers Magazine and has been selected for inclusion in the Illinois Rising Stars® lists. Ryan was recognized in Chicago Daily Law Bulletin's 2023 40 Under Forty list. Since 2024, Ryan has been selected for inclusion in The Best Lawyers in America© list in the practice areas of Litigation - Patent and Patent Law. In 2025, Ryan was selected by the Law Bulletin Publishing Company’s Leading Lawyer Network as a “Leading Lawyer.”
Laurence A. Tisch Professor of Law and Director, Classical Liberal Institute, New York University School of Law; Director, Classical Liberal Institute, Civitas Institute University of Texas at Austin
Richard A. Epstein is the Laurence A. Tisch Professor of Law, at New York University, a senior research fellow at the Civitas Institute at the University of Texas Austin, and a senior Lecturer, the University of Chicago. He received an LL.D., h.c . from the University of Ghent, 2003 , and an LLD h.c . from the University of Siegen in 2018 and the Bradley Prize in 2011. He has been a member of the American Academy of Arts and Sciences since 1985. He has edited both the Journal of Legal Studies (1981-1991) and the Journal of Law and Economics (1991-2001). He is also a founder and director of the Classical Liberal Institute at NYU Law School. His most recent book is The Classical Liberal Constitution: The Uncertain Quest for Limited Government (2014). His other books include Takings: Private Property and the Power of Eminent Domain ( 1985); Bargaining with the State (1993); Simple Rules for a Complex World (1995); Principles for a Free Society: Reconciling Individual Liberty and the Common Good (1998); Skepticism and Freedom: A Modern Theory of Classical Liberalism (2003); Design for Liberty: Private Property, Public Administration and the Rule of Law (2011), and most recently, The Myth of Birthright citizenship—and Beyond (2026). He has taught courses in , administrative law, antitrust, constitutional, contracts, environmental law, land use planning; real property, torts and water law. He has written and spoken extensively on a wide range of topics, and is writes a regular column for Defining Ideas.
Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice
Jeffrey Bossert Clark was born in Philadelphia, Pennsylvania on April 17, 1967. He is a graduate of Harvard University (A.B. in economics and history, 1989), the University of Delaware (M.A. in urban affairs and public policy, 1993), and the Georgetown University Law Center (J.D., 1995).
Mr. Clark began his career working for the State of Delaware’s Department of Finance, Division of Revenue as an economics analyst in the field of tax policy. During his tenure from 1989 to 1992, he authored several white papers analyzing Delaware revenue sources. Delaware also selected Mr. Clark to submit an economic report and affidavit to the United States Supreme Court in the original jurisdiction case of Delaware v. New York, 507 U.S. 490 (1993).
He entered Georgetown’s law school in 1992 where he earned honors as an articles editor of the Georgetown Law Journal, an Olin Law & Economics Fellow, and a member of the Order of the Coif. From 1995 to 1996, Mr. Clark clerked for Judge Boggs of the U.S. Court of Appeals of the Sixth Circuit. Mr. Clark then joined the law firm of Kirkland & Ellis as an associate from 1996-2001. He worked as an appellate litigator on numerous Supreme Court and other appellate cases and developed expertise in administrative law, statutory interpretation, as well as antitrust, labor, environmental, and telecommunications law.
Mr. Clark went on to serve in ENRD from 2001-2005 as a Deputy Assistant Attorney General selected by Attorney General Ashcroft and Assistant Attorney General Tom Sansonetti. In that capacity, he supervised ENRD’s Appellate and Indian Resources Sections. He reviewed, edited, and contributed to virtually every brief that ENRD filed in the Courts of Appeals, including several cases of exceptional significance that he personally briefed and argued. During his service in the early 2000s, Mr. Clark argued and won numerous cases in multiple U.S. Courts of Appeals and worked on all Supreme Court cases arising out of ENRD’s work.
In 2005, Mr. Clark returned to Kirkland & Ellis LLP as a partner, where he litigated until his return to ENRD in 2018. There he worked on numerous multi-billion-dollar matters and continued to argue many appellate cases. His practice operated at all levels — appellate litigation, trial court litigation, agency proceedings, and regulatory and litigation counseling. He has been named a Super Lawyer for multiple years running, highlighted in the Legal 500, named to the “Legal Who’s Who for Environmental Law” in Corporate Responsibility Magazine, rated A.V. preeminent by Martindale Hubbell, and named a member of the National Association of Distinguished Counsel’s Nation’s One Percent. He also was named one of America’s Top 100 High Stakes Litigators.
President Trump nominated Mr. Clark to be the Assistant Attorney General of the Environment and Natural Resources Division (ENRD) on June 7, 2017. He was confirmed by the U.S. Senate on October 11, 2018 and sworn into office on November 1, 2018, followed by an investiture ceremony on November 15, 2018.
Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice
Jeffrey Bossert Clark was born in Philadelphia, Pennsylvania on April 17, 1967. He is a graduate of Harvard University (A.B. in economics and history, 1989), the University of Delaware (M.A. in urban affairs and public policy, 1993), and the Georgetown University Law Center (J.D., 1995).
Mr. Clark began his career working for the State of Delaware’s Department of Finance, Division of Revenue as an economics analyst in the field of tax policy. During his tenure from 1989 to 1992, he authored several white papers analyzing Delaware revenue sources. Delaware also selected Mr. Clark to submit an economic report and affidavit to the United States Supreme Court in the original jurisdiction case of Delaware v. New York, 507 U.S. 490 (1993).
He entered Georgetown’s law school in 1992 where he earned honors as an articles editor of the Georgetown Law Journal, an Olin Law & Economics Fellow, and a member of the Order of the Coif. From 1995 to 1996, Mr. Clark clerked for Judge Boggs of the U.S. Court of Appeals of the Sixth Circuit. Mr. Clark then joined the law firm of Kirkland & Ellis as an associate from 1996-2001. He worked as an appellate litigator on numerous Supreme Court and other appellate cases and developed expertise in administrative law, statutory interpretation, as well as antitrust, labor, environmental, and telecommunications law.
Mr. Clark went on to serve in ENRD from 2001-2005 as a Deputy Assistant Attorney General selected by Attorney General Ashcroft and Assistant Attorney General Tom Sansonetti. In that capacity, he supervised ENRD’s Appellate and Indian Resources Sections. He reviewed, edited, and contributed to virtually every brief that ENRD filed in the Courts of Appeals, including several cases of exceptional significance that he personally briefed and argued. During his service in the early 2000s, Mr. Clark argued and won numerous cases in multiple U.S. Courts of Appeals and worked on all Supreme Court cases arising out of ENRD’s work.
In 2005, Mr. Clark returned to Kirkland & Ellis LLP as a partner, where he litigated until his return to ENRD in 2018. There he worked on numerous multi-billion-dollar matters and continued to argue many appellate cases. His practice operated at all levels — appellate litigation, trial court litigation, agency proceedings, and regulatory and litigation counseling. He has been named a Super Lawyer for multiple years running, highlighted in the Legal 500, named to the “Legal Who’s Who for Environmental Law” in Corporate Responsibility Magazine, rated A.V. preeminent by Martindale Hubbell, and named a member of the National Association of Distinguished Counsel’s Nation’s One Percent. He also was named one of America’s Top 100 High Stakes Litigators.
President Trump nominated Mr. Clark to be the Assistant Attorney General of the Environment and Natural Resources Division (ENRD) on June 7, 2017. He was confirmed by the U.S. Senate on October 11, 2018 and sworn into office on November 1, 2018, followed by an investiture ceremony on November 15, 2018.
Director, Robert A. Levy Center for Constitutional Studies, Cato Institute
Thomas Berry is the director in the Cato Institute’s Robert A. Levy Center for Constitutional Studies and editor in chief of the Cato Supreme Court Review. Before joining Cato, he was an attorney at Pacific Legal Foundation and clerked for Judge E. Grady Jolly of the U.S. Court of Appeals for the Fifth Circuit. His academic work has appeared in NYU Journal of Law and Liberty, Washington and Lee Law Review Online, and Federalist Society Review. His popular writing has appeared in The Wall Street Journal, National Law Journal, Investor’s Business Daily, National Review Online, and The Hill Online. He has testified before the U.S. Senate, and his work has been cited by the U.S. District Court for the District of Columbia.
Berry holds a J.D. from Stanford Law School, where he was a senior editor on the Stanford Law and Policy Review and a Bradley Student Fellow in the Stanford Constitutional Law Center. He graduated with a B.A. in Liberal Arts from St. John’s College, Santa Fe.
Partner, Boyden Gray PLLC
Jimmy Conde is partner at Boyden Gray PLLC, specializing in energy, environmental, and administrative law, with particular expertise in the Clean Air Act. He has protected clients against agency overreach in cutting-edge and complex legal proceedings, including challenges to EPA, DOE, DOT, and California rules seeking to compel electrification of motor vehicles, the FCC’s universal service fund, Department of Labor Wage & Hour Division rules, and HHS rules interfering with the practice of medicine and sound insurance practices. His written commentary has been published and referenced in the Wall Street Journal, the Washington Examiner, Concurrences (an antitrust publication), and Newsweek, among others.
Mr. Conde began his legal career as an associate with Boyden Gray PLLC. He clerked for Judge Douglas H. Ginsburg in the U.S. Court of Appeals for the D.C. Circuit and Judge David J. Porter in the U.S. Court of Appeals for the Third Circuit.
Associate Chief Counsel, U.S. Chamber Litigation Center, U.S. Chamber of Commerce
Maria C. Monaghan is associate chief counsel at the U.S. Chamber Litigation Center, the litigation arm of the U.S. Chamber of Commerce. In this capacity, she handles a variety of litigation matters for the Chamber.
Before joining the Litigation Center, Monaghan practiced as an associate in the D.C. office of Gibson, Dunn & Crutcher LLP. She represented clients in the telecommunications, energy, transportation, and e-commerce sectors, with a focus on appellate litigation and regulatory matters.
Monaghan served as a law clerk to the Honorable Samuel A. Alito of the United States Supreme Court, the Honorable Ed Carnes of the U.S. Court of Appeals for the Eleventh Circuit, and the Honorable Amul R. Thapar of the U.S. Court of Appeals for the Sixth Circuit. She graduated Order of the Coif from the University of Virginia School of Law, where she served as Articles Development Editor for the Virginia Law Review and participated in the Supreme Court Litigation Clinic. She received her undergraduate degree in Human Resource Management and Labor Studies from Rutgers University.
Senior Counsel, America First Legal
James Rogers is Senior Counsel at America First Legal Foundation, where he litigates in a number of areas, including border security, election integrity, parental rights, and administrative and constitutional law. Before joining America First Legal, from 2021 to 2022, he was Senior Litigation Counsel at the Solicitor General’s Office of the Arizona Attorney General’s Office. While there, he spearheaded lawsuits against the Biden Administration’s destructive open borders policies and its COVID19 vaccine mandates. From 2015 to 2021, James was a Foreign Service Officer at the U.S. Department of State, where he worked in the Office of the Assistant Legal Advisor for Consular Affairs, at the U.S. Consulate in Porto Alegre, Brazil, and at the U.S. Embassy in Windhoek, Namibia.
Prior to joining the Department of State, he was a commercial litigation partner at Osborn Maledon, a Phoenix-based firm with a #1 litigation ranking from Chambers and Partners. James earned a J.D. from Harvard Law School in 2009, an L.L.M. in International Law from the University of Cambridge in 2008, and a B.A., with honors, in International Studies from Brigham Young University in 2005. He is a sixth-generation Arizonan and lives in Mesa, Arizona, with his four children.
Partner, Marshall, Gerstein & Borun LLP
Ryan Schermerhorn is a registered patent attorney in the firm's Industrial & Mechanical Technologies Practice Group. His engineering background provides him with an understanding of clients’ technologies and enables him to effectively and efficiently provide a range of patent procurement services. He also leverages his experience to assist on intellectual property litigation as well as develop strategies for acquiring and protecting intellectual property.
Since 2017, Ryan has been listed as an "Emerging Lawyer" by Emerging Lawyers Magazine and has been selected for inclusion in the Illinois Rising Stars® lists. Ryan was recognized in Chicago Daily Law Bulletin's 2023 40 Under Forty list. Since 2024, Ryan has been selected for inclusion in The Best Lawyers in America© list in the practice areas of Litigation - Patent and Patent Law. In 2025, Ryan was selected by the Law Bulletin Publishing Company’s Leading Lawyer Network as a “Leading Lawyer.”
A Seat at the Sitting - April 2026
Thomas Berry, James Conde, Maria Monaghan, James Rogers, Ryan Schermerhorn
Each month, a panel of constitutional experts convenes to discuss the Court’s upcoming docket sitting...
A Seat at the Sitting - April 2026
Thomas Berry, James Conde, Maria Monaghan, James Rogers, Ryan Schermerhorn
Each month, a panel of constitutional experts convenes to discuss the Court’s upcoming docket sitting...
A Seat at the Sitting - April 2026
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EPA’s FY 2024 Enforcement Results
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On December 15, 2022, the United States Court of Appeals for the Eighth Circuit heard...
The Supreme Court Tackles Patent Reform: Why the Supreme Court Should End Inter Partes Review in Oil States
Richard A. Epstein
Note from the Editor: This article argues that the Supreme Court should find unconstitutional the...
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The Supreme Court Tackles Patent Reform
Click here to download a PDF version of this blog post. Oil States Energy Services,...
Case Notes
Jeffrey Bossert Clark
Three cases with significant implications for environmental and/or property-rights law are addressed below. Kumho Tire...
Colloquium: Junk Science, the Courts, and the Regulatory State (part II)
Jeffrey Bossert Clark
This article is part two of a two-part series covering the colloquium held on July...