Fellow, The Constitution Project at the Project On Government Oversight
Morton Rosenberg was a senior legal analyst with the Congressional Research Service (CRS) for 35 years specializing in the areas of constitutional law , administrative law and process, congressional practice and procedure, and labor law, and in the problems raised by the interface of Congress and the Executive which involved the scope of congressional oversight and investigative prerogatives, the validity of claims of executive and common law privileges before committees, enforcement of subpoenas, and issues raised by the presidential exercise of temporary and recess appointment. He also served extended details as legal counsel for a special investigative committee and as a legal advisor to the House General Counsel.
Since his retirement from CRS in 2008 he has undertaken a variety of consulting projects and assignments that have tapped into his experience and expertise in constitutional, congressional and administrative law, practice and procedure. This has included an engagement by the Constitution Project to research and write a monograph on congressional investigative oversight in 2009 which was updated and expanded and published in May 2017 entitled "When Congress Comes Calling: A Study on the Principles, Practices. and Pragmatics of Legislative Inquiry." He also served as a consultant to the general counsel of the Public Company Accounting Oversight Board (PCAOB) and its private counsel in the preparation of briefs and for oral argument before the Supreme Court in Free Enterprise Fund v. PCAOB (2010); and in preparing and submitting an amicus brief to the Supreme Court in NLRB v. SW General (2017) which was cited five times by the majority opinion. He is presently of counsel to the law firm Barnett Sivon & Natter, Washington, D.C. and a Constitution Project Fellow.
Founder, Law Office of Eileen J. O'Connor PLLC
After nearly 30 years as a national tax specialist with the IRS and major accounting firms, Eileen J. O’Connor, now an attorney in private practice, was Assistant Attorney General for the Justice Department’s Tax Division for six years during the administration of President George W. Bush and a member of then-President-elect Trump’s Treasury Department Transition Team. She focuses on federal administrative and tax law.
Shareholder, Brownstein Hyatt Farber Schreck, LLP
As co-chair of the firm’s Government Relations Department, Will Moschella leverages his experience in the Justice Department and Congress to counsel clients on a range of matters, including antitrust, financial services, legal reform, intellectual property and criminal law.
Will served at the Justice Department as principal associate deputy attorney general and as assistant attorney general in the Office of Legislative Affairs. In Congress, Will served on the House Judiciary Committee as chief oversight counsel, and chief legislative counsel and parliamentarian. He was involved in numerous high-profile legislative efforts, including the enactment of the Patriot Act, Intelligence Reform and Terrorism Prevention Act, and Prosecutorial Remedies and Other Tools to end the Exploitation of Children Today (PROTECT) Act.
In 2008, Will received the Edmund J. Randolph Award for Outstanding Service, the highest award that can be bestowed on a Justice Department official.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Partner, Mayer Brown LLP
Marcia Madsen was Chair of the Government Contracts practice and co-chair of the National Security Practice at Mayer Brown. She represented contractors in regulatory, policy, transactional, litigation, and investigative matters involving virtually every federal agency. Her clients included defense contractors, information technology and systems integrators, telecommunications companies, engineering firms, insurers, and manufacturing companies. Ms. Madsen's practice included defense of False Claims Act matters, internal investigations, audits, bid protests, claims and disputes before administrative forums and in the federal courts. She was a former Chair of the American Bar Association Section of Public Contract Law and currently co-chairs the Section’s Procurement Fraud Committee. She also is a member of the Federalist Society Administrative Law and Regulation Executive Committee. In addition, Marcia was a member of the Court of Federal Claims Advisory Council - Emeritus, and a recipient of the Court's Golden Eagle award. She was a Past President of the Board of Contract Appeals Bar Association. She was appointed by the Executive Office of the President to chair the Section 1423 Panel which recommended revision of the acquisition laws. She spoke and wrote frequently on government contracts and litigation topics.
Georgetown University Law Center, LL.M., 1980
American University - Washington College of Law, J.D., 1976
University of Utah, B.A., 1972
Associate, Mayer Brown
Peter Schmidt is an associate in Mayer Brown's Washington DC office and a member of the Intellectual Property practice. He focuses on the finance, media, and technology industries, advising and representing clients in patent, copyright, and trade secret matters. Peter’s work focuses on cases involving complex technical and financial issues, where he draws on his previous experience both as a software engineer and as a financial consultant for McKinsey and Company. These cases have covered both hardware and software issues in a range of sectors.
Peter has represented clients in a broad range of types and stages of litigation, and has extensive experience in case assessment; complaints and answers; discovery and fact gathering; non-infringement, infringement, invalidity, and validity contentions; claim construction; expert reports; motion practice (including summary judgment and admissibility of evidence); trial; and appeals. He graduated magna cum laude from Harvard Law School and first in his class from Carnegie Mellon University with a degree in Electrical and Computer Engineering; he also holds an MBA from Harvard Business School.
Counsel, Mayer Brown
Luke Levasseur has been representing clients in complex federal litigation for more than 20 years and currently focuses his practice on government contract matters. He represents clients in large contract disputes and bid protests before the US Court of Federal Claims and the Government Accountability Office. He has represented clients in federal and state False Claims Act cases, presenting arguments in federal court and conducting internal investigations for clients. Luke also has experience handling a variety of other federal court litigation for clients, involving such matters as antitrust claims, trademark disputes, and alleged fraud.
Prior to re-joining Mayer Brown in 2006, Luke represented the federal government as an attorney with the Civil Division of the US Department of Justice from 1997-2006. He served as lead counsel for, or had a significant role during the trial and appeal of, several large cases that were part of the Winstar-related litigation, which involved billions of dollars in claims against the government and were based on legislative and regulatory changes in the financial services industry. In those cases, he was responsible for developing and presenting expert opinion testimony from the government’s witnesses, including a Nobel-prize winning economist, and for cross-examining other parties’ experts. Throughout his career, Luke has focused on expert witness issues in complex litigation.
When he was with the Department of Justice, Luke also represented the government in numerous appeals before the US Court of Appeals for the Federal Circuit. He was awarded the John Marshall Award for Outstanding Legal Achievement and a Special Commendation Award for exceptional contributions to the defense of the Winstar cases. Luke continues to be an active part of the Court of Federal Claims bar and served as the President of that Court's Bar Association during 2012.
Partner, Mayer Brown
David Dowd is an experienced litigator at Mayer Brown whose practice has a strong emphasis in government contracting issues and controversies. He advises such clients as those involved in health care, information technology, large military systems, engineering services, and other industries regarding federal procurements and related issues. His counsel in this area includes commercial items, conflicts of interest, cost allowability issues, defective pricing, contract and subcontract negotiations, contract financing, assignments and novations, leasing, prime/sub disputes, preparation of claims, and procurement fraud.
David also handles procurement controversies, as he litigates bid protests and disputes before the Government Accountability Office and the Court of Federal Claims, represents contractors in litigation and arbitrations involving government contracts, and tries federal court litigation focused on contract disputes and alleged fraud.
Health care and insurance companies rely on David for advice regarding federal health care and insurance programs, including FEHBA, Medicare, TRICARE, and FEGLI. He represents these industry clients in bid protest and claim litigation regarding federal health care and insurance programs. In related matters, David counsels biotechnology and pharmaceutical companies on biodefense purchasing opportunities and applications, including research and development.
David has more than 20 years of practice experience, having joined Mayer Brown’s Washington, DC office in 2001 after practicing with two other national law firms.
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.
Partner, Donahue & Goldberg LLP
Sean H. Donahue's practice is focused on appellate litigation, including environmental cases in federal and state appellate courts, legal counseling, and helping clients communicate effectively to courts, agencies, and other audiences. He is a member of the bars of the District of Columbia and the State of California.
A 1992 graduate of University of Chicago Law School, Sean served as law clerk to Ruth Bader Ginsburg, then of the U.S. Court of Appeals for the D.C. Circuit, and to Justice John Paul Stevens. He entered private practice at Jenner & Block's Washington office, where he worked on civil matters including in telecommunications and First Amendment law. He then spent four years at the Department of Justice, Environmental and Natural Resources Division, Appellate Section, briefing and arguing cases in the United States Courts of Appeals, and state supreme courts concerning federal environmental and natural resources law, federal property law, takings, and Indian law.
Sean has argued approximately 50 cases in federal and state appellate courts. Since first establishing his own practice in 2002, he has represented environmental and public health organization parties in numerous major environmental and clean energy cases in the Supreme Court and the courts of appeals. His current practice includes representation of public interest organizations, governmental bodies, and private entities in environmental, energy, natural resources, and other cases. Sean has taught courses in environmental law, civil procedure, constitutional law and other subjects at Washington & Lee University School of Law, Iowa College of Law, and Georgetown University Law Center, and currently teaches climate change law and policy as a lecturer at Stanford Law School. He has given presentations at law schools including Berkeley, Columbia, Fordham, Harvard, Duke, Georgetown, Maryland, NYU, Northwestern, Stanford, University of Chicago, University of Florida, Vermont Law School, and Washington & Lee.
Partner, King & Spalding, LLP
Jacqueline Glassman specializes in motor vehicle and consumer safety, vehicle fuel economy and other transportation issues. She works with companies to resolve enforcement problems, find business opportunities in emerging initiatives and build healthy relations with regulators. Jacqueline frequently works with crisis management teams to find solutions that build consumer confidence and minimize corporate pain. As a partner in King & Spalding's Government Advocacy practice, Jacqueline helps lead the Automotive and Transportation Initiative.
Jacqueline's career has spanned corporate, government and private practice.
While in-house at a major automaker, Jacqueline developed the instinct for finding solutions to legal problems while advancing business objectives. As Chief Counsel at the National Highway Traffic Safety Administration, Jacqueline spearheaded the reform of the vehicle fuel efficiency program. She also oversaw scores of rule-making and enforcement actions, including the initial implementation of the TREAD Act. As NHTSA's Acting Administrator, Jacqueline worked with the White House and congressional staff to develop policy and legislation impacting the auto industry.
Jacqueline has worked with companies to create credit opportunities for frontier technologies in fuel efficiency and safety. She is actively involved with numerous companies developing and implementing automated technology for motor vehicles. Jacqueline has negotiated Consent Orders and helped companies pilot their implementation. Jacqueline frequently works hand-in-glove with litigators, engineers, crisis management firms, congressional relations staff and corporate executives. Jacqueline counsels clients on compliance, government relations, litigation strategy and building robust corporate safety programs.
Maurice and Hilda Friedman Professor of Law, Columbia Law School; CEO, New Civil Liberties Alliance
Philip Hamburger is the Maurice and Hilda Friedman Professor of Law at Columbia Law School, and Chief Executive Officer at the New Civil Liberties Alliance. Before coming to Columbia, he was the John P. Wilson Professor at the University of Chicago Law School.
He writes on constitutional law and its history—with particular emphasis on religious liberty, freedom of speech and the press, judicial office, administrative power, and unconstitutional conditions.
His books are Separation of Church and State (Harvard 2002), Law and Judicial Duty (Harvard 2008), Is Administrative Law Unlawful? (Chicago 2014), The Administrative Threat (Encounter 2017), and Liberal Suppression: Section 501(c)(3) and the Taxation of Speech (Chicago 2018). A forthcoming book is Purchasing Submission: Conditions, Power, and Freedom (Harvard 2021).
He is a member of the American Academy of Arts and Sciences, and he has served on the board of directors of the American Society for Legal History. He has twice received the Sutherland Prize for the most significant contribution to English legal history, and has been awarded the Henry Paolucci - Walter Bagehot Book Award, the Hayek Book Prize, and the Bradley Prize.
President and General Counsel, New Civil Liberties Alliance
NCLA’s President and General Counsel, Mark Chenoweth, has observed the administrative state up close and personal from perches in all four branches of the federal government. Mark served as the first chief of staff to Congressman Mike Pompeo, as legal counsel to Commissioner Anne Northup at the U.S. Consumer Product Safety Commission, as an attorney advisor in the Office of Legal Policy at the U.S. Department of Justice, and as a law clerk to the Hon. Danny J. Boggs on the U.S. Court of Appeals for the Sixth Circuit.
Mark has worked in several different roles in the private sector as well. He began his legal career in D.C. as a regulatory associate at Wilmer, Cutler & Pickering. He then returned to his home state of Kansas to serve as in-house counsel for Koch Industries. Most recently he spent over four years as general counsel of the Washington Legal Foundation.
Mark is a graduate of Yale College and the University of Chicago Law School, where he co-founded the Institute for Justice Clinic on Entrepreneurship and became a Tony Patiño Fellow. Mark has been widely quoted and/or published in newspapers and websites including the New York Times, San Francisco Chronicle, New Hampshire Union Leader, and Metropolitan Corporate Counsel. He has also had recurring op-eds in the Los Angeles Daily Journal, and at Forbes.com.
Dr. John Eastman is the former Henry Salvatori Professor of Law & Community Service and former Dean at Chapman University's Dale E. Fowler School of Law, where he had been a member of the faculty since 1999, specializing in Constitutional Law, Legal History, and Property. He is a founding director of the Center for Constitutional Jurisprudence, a public interest law firm affiliated with the Claremont Institute that he founded in 1999. He has a Ph.D. in Government from the Claremont Graduate School and a J.D. from the University of Chicago Law School, and a B.A. in Politics and Economics from the University of Dallas. He serves as the Chairman of the Board of the National Organization for Marriage.
Prior to joining the Chapman law faculty, Dr. Eastman served as a law clerk to the Honorable Clarence Thomas, Associate Justice, Supreme Court of the United States, and to the Honorable J. Michael Luttig, Judge, United States Court of Appeals for the Fourth Circuit and practiced law with the national law firm of Kirkland & Ellis. Dr. Eastman has also represented numerous clients in important constitutional law matters and has argued before the Supreme Court. On behalf of the Claremont Institute Center for Constitutional Jurisprudence, he has participated as amicus curiae before the Supreme Court of the United States, U.S. Courts of Appeals, and State Supreme Courts in more than one hundred cases of constitutional significance, including Boy Scouts of America v. Dale, Zelman v. Simmons-Harris (the school vouchers case), Kelo v. New London, Ct. (eminent domain), and Van Orden v. Perry (the 10 Commandments case). He has also appeared as an expert legal commentator on numerous television and radio programs, including C-SPAN, Fox News, PBS, NewsHour, and The O'Reilly Factor.
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