Director, Global Engagement; Vincent de Paul Professor of Law, DePaul University College of Law
Before joining DePaul, Dr. Alberto R. Coll served for five years as dean of the Center for Naval Warfare Studies, the U.S. Navy’s foremost strategic research center. A cum laude graduate from Princeton University in history, he earned his JD and PhD in government and foreign affairs from the University of Virginia. In 1982, Professor Coll joined the faculty at Georgetown University, and in 1986 was appointed secretary of the Navy Senior Research Fellow at the Naval War College. In 1989, he became the youngest holder of the Charles H. Stockton Chair of International Law, the college’s oldest chair. From 1990 to 1993, Professor Coll was principal deputy assistant secretary of defense, serving in the Pentagon office that oversaw the Defense Department’s policy, strategy and $3 billion budget for special operations forces and “low-intensity” conflict, including counterterrorism. For his work, he received the Secretary of Defense Medal for Outstanding Public Service. Professor Coll is the author of The Wisdom of Statecraft and editor of several other books on international relations and law. He is the author of prize-winning articles in the American Journal of International Law and the Naval War College Review, as well as articles in Foreign Policy, Washington Quarterly, Harvard Journal of International Law, the University of Pennsylvania Journal of International Law, and the UCLA Journal of International Law and Foreign Affairs. In 2004, Professor Coll received the Antonio Jose Irisarri Medal for his contribution to strengthening the rule of law and civilian control over the military in Guatemala. He has served as consultant to the Pew Charitable Trusts, the Ford Foundation, the Carnegie Council on Ethics and International Affairs, the Rand Corp., the United States Information Agency, and numerous defense and intelligence organizations. He is a frequent commentator on American foreign policy, U.S. relations with Cuba and Latin America, and international legal and political issues. Over the past 28 years he has lectured at more than 120 universities, think tanks, government agencies, and public forums in the United States, Latin America, Europe, Asia and South Africa. Professor Coll is a member of the Virginia Bar, the Council on Foreign Relations, and the Instituto de Estudios Juridicos y Politicos at the Universidad Complutense de Madrid. At DePaul, he teaches courses on international law, international human rights, U.S. foreign relations, terrorism, international trade and Latin America.
Senior Fellow in Executive Power, Cato Institute
Molly Nixon is a senior fellow at the Cato Institute, where she focuses on the scope, use, and history of executive power as well as its limits under the Constitution. Molly was previously an attorney with Pacific Legal Foundation’s separation of powers practice, where she litigated cases challenging congressional delegations of legislative power and executive branch overreach. Before that, she served as an Attorney-Advisor at the Department of the Interior and as Legislative Counsel for Congressman Justin Amash.
Molly holds a J.D. from New York University School of Law and a B.A. in History and International Relations from Boston University. She clerked for the U.S. District Court for the District of Alaska and practiced law at a firm in New York City for several years before moving to Washington, D.C.
Liviu Librescu Professor of Law, Columbia School of Law
Matthew C. Waxman is a nationally known authority on national security law, cybersecurity, terrorism, intelligence, and armed conflict. He brings the perspective of a former senior government official to his scholarship on war powers, the regulation of military technology, counterterrorism, surveillance, and cybersecurity.
His writing appears regularly in the Lawfare national security blog, and his expertise is frequently sought in media interviews and congressional testimony. Waxman is a member of the Council on Foreign Relations, where he also serves as adjunct senior fellow for Law and Foreign Policy.
At the Law School, Waxman chairs the National Security Law Program and has co-chaired the Cybersecurity Center at Columbia’s Data Science Institute, an interdisciplinary endeavor that brings together experts from across the university to develop ways to keep data secure and private. His teaching focuses on constitutional war powers, international law, and data privacy and surveillance. In 2008, he helped create Columbia Law’s Judge Advocate (JAG) Scholars program, which brings military lawyers to the LL.M. program. He has cultivated opportunities for students to meet with alumni faculty at West Point, where he served as a senior fellow at the Lieber Institute for Law and Warfare.
Before joining the Law School in 2008, Waxman served in senior positions at the State Department, Department of Defense, and National Security Council during the George W. Bush administration. As a National Security Council aide, he was involved in the White House response to the attacks on September 11, 2001. In 2005, as a deputy assistant secretary of defense, he pressed for full compliance with the Geneva Conventions at military detention sites. In 2006, as the State Department’s principal deputy director of policy planning, he led the United States delegation to the United Nations Human Rights Committee in Geneva.
After law school, Waxman served as a law clerk to Supreme Court Justice David H. Souter and to Judge Joel M. Flaum of the U.S. Court of Appeals for the 7th Circuit. Earlier in his career, he worked as a defense analyst at RAND.
Emanuel S. Heller Professor of Law, University of California at Berkeley; Thomas Smith Senior Research Fellow, The Civitas Institute, University of Texas at Austin
John Yoo is the Emanuel Heller Professor of Law at the University of California at Berkeley. He is also the Thomas Smith Senior Research Fellow, Civitas Institute, at the University of Texas at Austin. He is also a Nonresident Senior Fellow at the American Enterprise Institute.
His most recent book, The Politically Incorrect Guide to the Supreme Court, co-authored with Robert Delahunty, was published in 2023. Professor Yoo’s other books include Defender-in-Chief: Trump’s Fight for Presidential Power; Striking Power: How Cyber, Robots, and Space Weapons Change the Rules for War; Point of Attack: Preventive War, International Law, and Global Welfare; and Crisis and Command: A History of Executive Power from George Washington to George Bush.
He is a co-author of volumes 1 and 2 of R. Rossum, G. Tarr, V. Munoz & J. Yoo American Constitution Law (Routledge, 2026), and a co-editor of the eight-volume series on the 250th anniversary of the American Revolution, We Hold These Truths, with Yuval Levin and Adam White of the American Enterprise Institute.
Professor Yoo has published more than 100 articles in academic journals on subjects including national security, constitutional law, international law, and the Supreme Court. He also regularly contributes to the editorial pages of the Wall Street Journal, New York Times, Washington Post, Los Angeles Times, and National Review, among others.
Professor Yoo has served in all three branches of government. He was an official in the U.S. Department of Justice, where he worked on national security and terrorism issues after the 9/11 attacks. He served as general counsel of the U.S. Senate Judiciary Committee. He has been a law clerk for Supreme Court Justice Clarence Thomas and federal appeals Judge Laurence Silberman. He has been a visiting professor at the University of Texas at Austin’s School of Civic Leadership, Seoul National University, the Interdisciplinary Center Herzliya, Keio University, Trento University, the University of Chicago, and the Free University of Amsterdam.
Professor Yoo supervises the Public Law and Policy Program and the California Constitution Center. He also serves on the boards of Founding Forward, the Washington Legal Foundation, the Pacific Legal Foundation, the Ulysses Grant Institute, the Federalist Society’s Separation of Powers and Federalism Division, the Universidad Cientifica del Sur Law School, and the Asia-Pacific Law Institute at Seoul National University. He is a winner of the Federalist Society’s Paul Bator award and the Heritage Foundation’s Edwin Meese III Originalism Lectureship.
Professor Yoo graduated from Yale Law School and summa cum laude from Harvard College.
Senior Research Fellow, Border Security and Immigration Center, The Heritage Foundation
Simon Hankinson is a Senior Research Fellow in the Border Security and Immigration Center at The Heritage Foundation.
From 1999–2022, he was a Foreign Service Officer serving in India, Fiji, Ghana, Slovakia, Togo, Washington, D.C., Marseille, and Nairobi. Prior to entering the State Department, Hankinson worked as a lawyer in London, and then taught history, English, and drama at a private school in Miami.
Hankinson holds a master’s degree in modern history from St. Andrews, Scotland, a degree from the College of Law in London, and a master’s degree in international security affairs from the National Defense University in Washington, D.C.
Immigration Law and Policy Fellow, Cornell Law School
Randel Johnson has worked on employment and immigration law and policy issues for over twenty-five years, bringing a broad perspective from working in the executive agencies, on Capitol Hill, and in the private sector. Deeply involved in past efforts on comprehensive immigration reform, including testifying in both the U.S. House of Representatives and the U.S. Senate, his experience includes working as the senior vice president at the U.S. Chamber of Commerce, labor counsel to the House Education and Labor Committee, and special assistant to the solicitor of labor at the U.S. Department of Labor. He was also a partner at the law firm of Seyfarth Shaw and most recently a judge on the Administrative Review Board at the Labor Department.
Senior Counsel, America First Legal Foundation
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.
Vice President, Immigration Policy, U.S. Chamber of Commerce
Patrick Shen is vice president for Immigration Policy at the U.S. Chamber of Commerce. He helps Chamber member companies develop sensible, pro-growth immigration policies and advocates for such policies on our members’ behalf before Congress and the executive branch.
Before joining the Chamber, Shen was an immigration lawyer for over 30 years in the government and private sector. Most recently, he was a partner at a leading global business immigration law firm where he advised multinational companies on worksite compliance and represented employers from all sectors in government enforcement actions.
Earlier in his career, Shen was confirmed unanimously by the U.S. Senate as Special Counsel for Immigration-related Unfair Employment Practices in the Justice Department. He previously served as the policy and planning director of U.S. Immigration and Customs Enforcement (ICE) and the chief immigration counsel for the Senate Judiciary Committee.
Shen began his government career as a trial attorney for the former Immigration and Naturalization Service (INS), the U.S. Attorney’s Office for the Eastern District of New York, and the Justice Department’s Civil Division in Washington, D.C.
Shen received his undergraduate and law degrees from Brigham Young University. He was an adjunct professor at American University’s Washington College of Law and a sports reporter in Taiwan before attending law school. He became a certified emergency medical technician (EMT) shortly after September 11, 2001, and still volunteers with his local fire department in Maryland.
Partner, Holland & Hart
Chris provides strategic counsel when companies and individuals face government audits or investigations of their immigration practices. With nearly three decades of experience, he brings extensive experience and government relationships to help clients prepare for such audits and investigations and to defend them when regulators show up.
Often working with clients in times of crisis, Chris’s goal is to alleviate anxiety and put them at ease. Whether counseling a company about responding to a subpoena or defending it in a government investigation or raid, clients appreciate his pragmatic, straight forward counsel and clear plans of action.
Chris and his team work closely with in house legal and human resources departments to provide training and to help them develop effective compliance policies and internal audit and remediation plans. When significant legal concerns arise, he helps teams conduct internal investigations and formulate the best path forward to protect the interests of the company.
Chris also works with executives, operational leaders, and talent management teams to help position a company for success with effective, compliant global mobility programs. With expertise maneuvering within the complex US immigration process, he helps a wide range of companies secure employment-based non-immigrant (e.g., E, H, L, O, P, TN, etc.) and immigrant (first, second, and third preference categories) visas.
Chris also works with organizations seeking to do business outside of the United States, working closely with in-house and outside counsel to assess legal risks and develop solutions to overcome challenges with doing business abroad.
Chris’s fluency in Spanish is a value-add to clients.
Chris rejoins Holland & Hart from Ogletree Deakins where he was an equity shareholder and managed the firm’s Denver immigration practice.
Investment Company Institute
Partner, Baker Hostetler LLP
David Rivkin is a member of the firm's litigation, international and environmental teams and is co-leader of the firm's national appellate practice. He has extensive experience in constitutional, administrative and international law litigation and has been involved in numerous high-profile cases. With his prior experience in the government sector, David draws on a wealth of knowledge when providing compliance advice to companies and handling enforcement proceedings before government agencies on issues arising out of multilateral and unilateral sanctions, the Foreign Corrupt Practices Act (FCPA), anti-boycott issues, bankruptcy and financial fraud matters, and environmental and energy issues.
David has developed and implemented legislative, regulatory and litigation initiatives for two presidential administrations. Over the years, he has published hundreds of articles, op-eds, book reviews and book chapters on a variety of international, legal, constitutional, defense, arms control, foreign policy, environmental and energy issues for various newspapers and magazines, including The Wall Street Journal, The Washington Post, The New York Times, USA Today and The Los Angeles Times, and has been a frequent commentator and guest on TV and radio shows including ABC, CBS, NBC, CNN, Fox News, NPR and PBS.
Professor of Law, Case Western Reserve University School of Law
Michael Scharf is Professor of Law and Director of the Frederick K. Cox International Law Center at Case Western Reserve University School of Law. From October 2004-March 2005, Professor Scharf served as a member of the elite international team of experts which provided training to the judges and prosecutors of the Iraqi Special Tribunal. In February 2005, Professor Scharf and the Public International Law and Policy Group, a Non-Governmental Organization he co-founded, were nominated for the Nobel Peace Prize by six governments and the Prosecutor of an International Criminal Tribunal for the work they have done to help in the prosecution of major war criminals, such as Slobodan Milosevic, Charles Taylor, and Saddam Hussein.
During the first Bush and Clinton Administrations, Professor Scharf served in the Office of the Legal Adviser of the U.S. Department of State, where he held the positions of Counsel to the Counter-Terrorism Bureau, Attorney-Adviser for Law Enforcement and Intelligence, Attorney-Adviser for United Nations Affairs, and delegate to the United Nations General Assembly and to the United Nations Human Rights Commission. In 1993, he was awarded the State Department's Meritorious Honor Award "in recognition of superb performance and exemplary leadership" in relation to his role in the establishment of the International Criminal Tribunal for the former Yugoslavia.
A graduate of Duke University School of Law, Professor Scharf is the author of over fifty scholarly articles and seven books, including Balkan Justice, which was nominated for the Pulitzer Prize in 1998, The International Criminal Tribunal for Rwanda, which was awarded the American Society of International Law's Certificate of Merit for the Outstanding book in International Law in 1999, Peace with Justice, which won the International Association of Penal Law Book of the Year Award for 2003, and casebooks on The Law of International Organizations and International Criminal Law.
Professor Scharf has testified as an expert before the U.S. Senate Foreign Relations Committee; his Op Eds have been published by the Washington Post, Los Angeles Times, Boston Globe, Christian Science Monitor, and International Herald Tribune; and he has appeared on ABC World News Tonight with Peter Jennings, Nightline with Ted Koppel, The O'Reilly Factor, The NewsHour with Jim Lehrer, The Charlie Rose Show, the BBC's The World, CNN, and National Public Radio.
In 2002, Professor Scharf established the War Crimes Research Office at Case Western Reserve University School of Law, which provides research assistance to the Prosecutors of the International Criminal Tribunal for Rwanda, the Special Court for Sierra Leone, the International Criminal Court, and the Iraqi Special Tribunal on issues pending before those international tribunals. Copies of over seventy of these research memos are available on the Frederick K. Cox International Law Center War Crimes Research Portal, at: http://law.case.edu/war-crimes-research-portal.
Retired Partner, Sullivan & Cromwell LLP
Upon his resignation as the Legal Adviser of the U.S. Department of State in January 1993, Mr. Williamson rejoined Sullivan & Cromwell's Washington, D.C. office. He originally joined the Firm in 1964 after graduating from New York University School of Law, where he was an editor of the Law Review. He became a partner of the Firm in 1971, moved to its London office in 1976, returned to its New York office in 1979, moved to its Washington, D.C. office in 1988 and became Of Counsel in 2007. In 2018, he retired from the firm.
At Sullivan & Cromwell, Mr. Williamson engaged in a broad and wide-ranging domestic and international financing and transactions practice, as well as advice with respect to corporate governance issues, the United States’ economic sanctions laws, the ethics rules applicable to government officials and the immunities of foreign sovereigns and international organizations.
Mr. Williamson has been an active participant on panels and other forums involving public international law and national security issues, such as the domestic and international bases for the use of force, the role of the United States with respect to the International Criminal Court, the law of the sea and the application of international legal principles in the war against terrorism.
Mr. Williamson is a member of the Council on Foreign Relations and a former member of the Executive Council of the American Society of International Law, the Executive Committees of the Business and Advisory Committee (BIAC) to the OECD and the U.S. Council for International Business, the United States Advisory Board of NTT DoCoMo, Inc. and the Board of Directors of Triton Oil & Gas Limited.
Mr. Williamson has served on the Boards of Regents and Trustees of the University of the South and as chair of the Board of Regents. He is currently a member of the Board of Directors of the American Council of Trustees and Alumni, a higher education watchdog.
Edward B. Burling Professor of International Law and Diplomacy, Johns Hopkins University School of Advanced International Studies
Member of the World Bank International Centre for Settlement of Investment Disputes; served on the U.S. Secretary of State’s advisory committees on private and public international law and on the CIA historical review panel; U.S. delegate to the U.N. Human Rights Committee (Geneva and New York, 2003–11); member of U.S. delegations to the Organization for Security and Co-operation in Europe and the Wehrkunde security conference; member of the Pentagon Defense Policy Advisory Board (2003–09) and the Hart-Rudman Commission on National Security in the 21st Century; was independent expert for U.N. criminal tribunal for the former Yugoslavia; formerly director of studies at Hague Academy for International Law, tenured professor at Yale Law School, visiting professor at the University of Paris (Sorbonne) and Charles H. Stockton professor at the U.S. Naval War College; named Berlin Prize Fellow of the American Academy; was vice president of the American Society of International Law, serves as president of the American branch of the International Law Association and vice chair of Freedom House and is on the board of editors for American Journal of International Law, Journal of Strategic Studies, American Interest, World Policy Journal, National Defense University Prism and National Interest; was law clerk to Judge Henry Friendly of the U.S. Court of Appeals (Second Circuit) and U.S. Supreme Court Justice Harry Blackmun; commentator for BBC, NPR and PBS; J.D., Yale University.
Partner, Baker & Hostetler LLP
Lee A. Casey focuses on federal environmental, constitutional and international law and Alien Tort Statute issues. He also advises clients on compliance issues under the Foreign Corrupt Practices Act (FCPA), U.S. trade sanctions regimes, and federal ethics requirements. Mr. Casey’s practice includes federal, district and appellate court litigation, as well as matters before federal agencies. Prior to joining BakerHostetler, Mr. Casey was an associate with Hunton & Williams, practicing in international, environmental and constitutional law. From 2004 through 2007 he served as an member of the United Nations Subcommission on the Promotion and Protection of Human Rights.
From 1986 to 1993, Mr. Casey served in various capacities in the federal government, including the Office of Legal Policy (1986-90) and the Office of Legal Counsel (1992-93) at the U.S. Department of Justice and served as Deputy Associate General Counsel at the U.S. Department of Energy (1990-92). The Office of Legal Counsel is responsible for advising the Attorney General and the White House on issues of constitutional law and statutory interpretation. The Office of Legal Policy served as a strategic “think tank” for the Reagan Justice Department and was responsible for reviewing candidates for appointments to the federal bench.
Before joining the government in 1986, Mr. Casey was an associate in the Los Angeles firm of Mitchell, Silberberg & Knupp, practicing in the litigation section, with an emphasis on copyright, contract and First Amendment issues. From 1984 to 1985, Mr. Casey served as Law Clerk to the Honorable Alex Kozinski, then Chief Judge of the United States Claims Court. From 1982 to 1984, he practiced at the Detroit firm of Dykema Gossett, focusing on corporate, securities, commercial and intellectual property litigation, and from 1990 through 1994, he served as an Adjunct Professor of Law at George Mason University School of Law in Arlington, Virginia.
Among the chapters, articles and papers that Mr. Casey has authored or co-authored are: “International Law and the Nation-State at the U.N.,” Reclaiming the Language of Freedom at the United Nations: A Guide for U.S. Policymakers, The Heritage Foundation (2006) (with David B. Rivkin, Jr.); “The Dangerous Myth of Universal Jurisdiction,” A Country I Do Not Recognize (ed. Robert H. Bork) (2005) (with David B. Rivkin, Jr.); “Leashing the Dogs of War,” The National Interest (Fall 2003) (with David B. Rivkin, Jr.); “The Limits of Legitimacy: The Rome Statute’s Unlawful Application to Non-State Parties,” 44 Va.J.Int’l L. 63 (Fall 2003) (with David B. Rivkin, Jr.); “Devil’s Advocates: The Danger of Judging Lawyers By Their Clients,” Policy Review (Feb. and Mar. 2002) (with David B. Rivkin, Jr.); “The Case Against the International Criminal Court,” 25 Fordham Int’l L.J. 840 (2002); “Europe in the Balance: The Alarmingly Undemocratic Drift of the European Union,” Policy Review (June and July 2001) (with David B. Rivkin Jr.); “Against an International Criminal Court,” Commentary, May 1998 (with David B. Rivkin, Jr.); “Federalism (Cont’d.),” Commentary, December 1996 (with David B. Rivkin, Jr.); “Presidents and War Powers: Another View,” Common Sense, Winter 1996 (with David B. Rivkin, Jr.); “How Binding Are Contracts?” The American Enterprise, Nov./Dec. 1993 (with David B. Rivkin, Jr.); and “Pirate Constitutionalism: An Essay in Self-Government,” 8 J. of L. & Politics 477 (1992).
Mr. Casey is a member of the California, Michigan and District of Columbia Bar Associations.
Walter L. Brown Professor of Law, University of Virginia School of Law
John Norton Moore, who joined the faculty in 1966, is an authority on international law, national security law and the law of the sea. He also teaches advanced topics in national security law and the rule of law. Moore taught the first course in the country on national security law and conceived and co-authored the first casebook on the subject. From 1991-93, during the Gulf War and its aftermath, Moore was the principal legal adviser to the Ambassador of Kuwait to the United States and to the Kuwait delegation to the U.N. Iraq-Kuwait Boundary Demarcation Commission.
From 1985 to 1991, he chaired the board of directors of the U.S. Institute of Peace, one of six presidential appointments he has held. From 1973 to 1976, he was chair of the National Security Council Interagency Task Force on the Law of the Sea and ambassador and deputy special representative of the president to the law of the sea conference. Previously he served as the counselor on international law to the State Department. With the deputy attorney general of the United States, he was co-chair in March 1990 of the U.S.-USSR talks in Moscow and Leningrad on the rule of law. As a consultant to the Arms Control and Disarmament Agency, he was honored by the director for his work on the ABM Treaty Interpretation Project. He has been a frequent witness before congressional committees on maritime policy, legal aspects of foreign policy, national security, war and treaty powers, and democracy and human rights. He has been a fellow of the Woodrow Wilson International Center for Scholars at the Smithsonian Institution.
Moore is a member of advisory and editorial boards for nine journals and numerous professional organizations, and he has published many articles on oceans policy, national security and international law.
Partner, O'Melveny & Myers LLP
Walter Dellinger is an influential authority on appellate and Supreme Court decisions, lending his experience as a former Solicitor General and decades of legal knowledge to amicus briefs, a multitude of pro bono clients, and public and private companies involved in bet-the-company litigation. A frequent commentator for the Wall Street Journal, Slate, and major television networks, Walter holds the designation of the Douglas B. Maggs Emeritus Professor of Law at Duke University. He was named one of the 100 Most Influential Lawyers in America by the National Law Journal and recognized with a Lifetime Achievement Award from the American Lawyer.
Walter, who formerly served as O’Melveny’s Diversity and Inclusion Partner, helped convince the US Supreme Court that proponents of Proposition 8, California's ban on same-sex marriage, did not have standing to appeal a court order invalidating it. That ruling, Hollingsworth v. Perry, cleared the way for marriage equality in California and eventually nationwide.
Walter served as Assistant Attorney General and head of the Office of Legal Counsel (OLC) from 1993 to 1996. He was acting Solicitor General for the 1996-97 Term of the US Supreme Court. During that time, Walter argued nine cases before the Court, the most by any Solicitor General in more than 20 years. His arguments included cases dealing with physician-assisted suicide, the line item veto, the cable television act, the Brady Act, the Religious Freedom Restoration Act, and the constitutionality of remedial services for parochial school children.
Walter has served as Special Counsel to the Board of Directors of the New York Stock Exchange in connection with the NYSE’s transformation into a publicly held company and its acquisition of an electronic trading company.
After serving in early 1993 in the White House as an advisor to the President on constitutional issues, Walter was nominated by the President to be Assistant Attorney General. He was confirmed by the Senate in October 1993 and served for three years. As head of the OLC, Walter issued opinions on a wide variety of issues, including: the President's authority to deploy United States forces in Haiti and Bosnia; whether the trade agreements required treaty ratification; and a major review of separation of powers questions. He provided extensive legal advice on questions arising out of the shutdown of the federal government, on national debt ceiling issues, and on loan guarantees for Mexico.
Walter has published articles on constitutional issues for scholarly journals including the Harvard Law Review, the Yale Law Journal, and the Duke Law Journal, and has written for the New York Times, the Washington Post, Newsweek, the New Republic, and the London Times. He has been a visiting professor at the Catholic University of Belgium and has given lectures to university faculties in Florence, Siena, Nuremberg, Copenhagen, Leiden, Utrecht, Tilburg, Mexico, and Rio de Janeiro, and has delivered major lectures at Stanford, Yale, Harvard, Michigan, Berkeley, Penn, Duke, Chicago, and other US law schools. He has testified more than 25 times before committees of Congress.
In private practice, Walter’s arguments before the United States Supreme Court have included Exxon Shipping Co. v. Baker, Morgan Stanley Capital Group Inc. v. Public Utility District No. 1 of Snohomish County, Alabama v. North Carolina, Hosanna-Tabor v. EEOC, Heller v. District of Columbia, Jackson v. Birmingham School District, Brown v. Legal Foundation of Washington, US Airways v. Barnett, Utah v. Evans, Hunt v. Cromartie, and Hunt v. Easley. His most notable Court of Appeals and state supreme court arguments include Martha Stewart v. United States, Whiteside v. United States, and Exxon v. Alabama, LCI v. Phillips.
General Counsel, Department of the Army
Mr. Benedict S. Cohen was appointed by President Bush to serve as the General Counsel for the Department of the Army effective on August 4, 2006. Mr. Cohen has twenty years of experience in high-level positions across the federal government, with a principal focus on national security and foreign policy. Prior to his current position, he served as the Managing Executive for Policy and Counselor to Chairman Cox at the U.S. Securities and Exchange Commission, where he focused on legal and policy issues facing the agency and enhancing the Commission’s crisis-management and homeland-security capabilities. Prior to taking this position, he served as staff director of the Committee on Homeland Security of the U.S. House of Representatives, where he managed the transition from select committee to full standing committee status and the passage of authorization legislation for the Department of Homeland Security and of legislation reforming DHS’ homeland security grant program.
Mr. Cohen has also served as Deputy General Counsel (Environment & Installations) for the Defense Department, in which capacity he spearheaded DoD’s Readiness and Range Preservation Initiative, a multifaceted legislative, regulatory, and resource-management program to ensure sustainability of the military’s test and training capabilities and foster better environmental stewardship. He also provided legal support for DoD’s installation initiatives, and served as a principal spokesman for the Department on environmental and installations issues. He has also served in senior positions in the White House Counsel’s Office, the congressional leadership staff, and the Department of Justice, as well as serving in two law firms.
Mr. Cohen graduated from Yale magna cum laude in 1980 with a B.A. in history, and from the University of Chicago Law School in 1983, having served as an Associate Editor of the Law Review. He clerked for Judge Laurence H. Silberman of the U.S. Court of Appeals for the D.C. Circuit. He lives in American University Park in Washington, D.C. His wife is an attorney in private practice. He has two children, aged eight and ten.
Scholar in Residence, The Constitution Project
Louis Fisher is Scholar in Residence at the Constitution Project. Previously he worked for four decades at the Library of Congress as Senior Specialist in Separation of Powers (Congressional Research Service, from 1970 to 2006) and Specialist in Constitutional Law (the Law Library, from 2006 to 2010). During his service with CRS he was research director of the House Iran-Contra Committee in 1987, writing major sections of the final report. Fisher's specialties include constitutional law, war powers, budget policy, executive-legislative relations, and judicial-congressional relations.
After completing his doctoral work in political science at the New School for Social Research in 1967, he taught full-time at Queens College for three years. Later he taught part-time at Georgetown University, American University, Catholic University law school, Indiana University, Catholic University, the College of William and Mary law school, and Johns Hopkins University. Currently he is a Visiting Professor at the William and Mary law school.
His books include President and Congress (1972), Presidential Spending Power (1975), The Constitution Between Friends (1978), The Politics of Shared Power (4th ed. 1998), Constitutional Conflicts Between Congress and the President (6th ed. 2014), Constitutional Dialogues (1988),American Constitutional Law (with Katy J. Harriger, 10th ed. 2013), Presidential War Power (3rd ed. 2014), Political Dynamics of Constitutional Law (with Neal Devins, 5th ed. 2011), Congressional Abdication on War and Spending (2000), Religious Liberty in America: Political Safeguards (2002), Nazi Saboteurs on Trial: A Military Tribunal & American Law (2003; 2d ed. 2005), The Politics of Executive Privilege (2004), The Democratic Constitution (with Neal Devins, 2004), Military Tribunals and Presidential Power: American Revolution to the War on Terrorism (2005), In the Name of National Security: Unchecked Presidential Power and the Reynolds Case (2006), The Constitution and 9/11: Recurring Threats to America’s Freedoms (2008), The Supreme Court and Congress: Rival Interpretations (2009), On Appreciating Congress: The People’s Branch (2010), Defending Congress and the Constitution (2011), On the Supreme Court: Without Illusion and Idolatry(2013), and The Law of the Executive Branch: Presidential Power (2014). His textbook in constitutional law is available in two paperbacks:Constitutional Structures: Separation of Powers and Federalism and Constitutional Rights: Civil Rights and Civil Liberties. With Leonard W. Levy he edited the four-volume Encyclopedia of the American Presidency (1994).
He has twice won the Louis Brownlow Book Award (for Presidential Spending Power and Constitutional Dialogues). The encyclopedia he co-edited was awarded the Dartmouth Medal. In 1995 he received the Aaron B. Wildavsky Award “For Lifetime Scholarly Achievement in Public Budgeting” from the Association for Budgeting and Financial Management. In 2006 he received the Neustadt Book Award for Military Tribunals and Presidential Power. In 2011 he received the Walter Beach Pi Sigma Alpha Award from the National Capital Area Political Science Association for strengthening the relationship between political science and public service. In 2012 he received the Hubert H. Humphrey Award from the American Political Science Association in recognition of notable public service by a political scientist. The July 2013 issue of PS: Political Science & Politics includes a symposium on "Law and (Disciplinary) Order: A Dialogue about Louis Fisher, Constitutionalism, and Political Science.
Dr. Fisher has been invited to testify before Congress more than 50 times on such issues as war powers, state secrets privilege, NSA surveillance, executive spending discretion, presidential reorganization authority, Congress and the Constitution, the legislative veto, the item veto, the Gramm-Rudman deficit control act, executive privilege, committee subpoenas, executive lobbying, CIA whistleblowing, covert spending, the pocket veto, recess appointments, the budget process, the balanced budget amendment, biennial budgeting, and presidential impoundment powers.
He has been active with CEELI (Central and East European Law Initiative) of the American Bar Association, traveling to Bulgaria, Albania, and Hungary to assist constitution-writers; participating in CEELI conferences in Washington, D.C. with delegations from Bosnia-Herzegovina, Lithuania, Romania, and Russia; serving on CEELI "working groups" on Armenia and Belarus; and assisted in drafting constitutional amendments for the Kyrgyz Republic. As part of CRS delegations he traveled to Russia and Ukraine to assist on constitutional questions. For the International Bar Association he helped analyze the draft constitutions for Swaziland and Zimbabwe.
He is the author of more than 500 articles in law reviews, political science journals, encyclopedias, books, magazines, and newspapers. He has been invited to speak in Albania, Australia, Belgium, Bulgaria, Canada, China, the Czech Republic, Denmark, England, France, Germany, Greece, Israel, Japan, Macedonia, Malaysia, Mexico, the Netherlands, Oman, the Philippines, Poland, Romania, Russia, Slovenia, South Korea, Sweden, Taiwan, Ukraine, and the United Arab Emirates. The topics include a range of constitutional, political, and institutional issues.
George P. Shultz Senior Fellow in Foreign Policy and National Security Affairs, Emeritus, Hoover Institution
Abraham D. Sofaer was appointed the first George P. Shultz Distinguished Scholar and Senior Fellow at the Hoover Institution in 1994. Named in honor of former US secretary of state George P. Shultz, the appointment is awarded to a senior scholar whose broad vision, knowledge, and skill will be brought to bear on the problems presented by a radically transformed global environment.
Sofaer's work focuses on the power over war within the US government and on issues related to international law, terrorism, diplomacy, and national security. His most recent books are Taking on Iran: Strength, Diplomacy, and the Iranian Threat(Hoover Institution Press, 2013) and The Best Defense?: Legitimacy and Preventive Force (Hoover Institution Press, 2010).
From 1985 to 1990, he served as a legal adviser to the US Department of State, where he resolved several interstate matters, including the dispute between Egypt and Israel over Taba, the claim against Iraq for its attack on the USS Stark, and the claims against Chile for the assassination of Orlando Letelier. He received the Distinguished Service Award in 1989, the highest state department award given to a non–civil servant.
From 1979 to 1985, Sofaer served as a US district judge in the Southern District of New York. From 1969 to 1979, he was a professor of law at Columbia University School of Law and wrote War, Foreign Affairs, and Constitutional Power: The Origins.From 1967 to 1969, he was an assistant US attorney in the Southern District of New York, after clerking for Judge J. Skelly Wright on the US Court of Appeals in Washington, DC, and the Honorable William J. Brennan Jr. on the US Supreme Court. He practiced law at Hughes, Hubbard and Reed from 1990 to 1994.
A veteran of the US Air Force, Sofaer received an LLB degree from New York University School of Law in 1965, where he was editor in chief of the law review. He holds a BA in history from Yeshiva College (1962). Sofaer is a founding trustee of the National Museum of Jazz in Harlem and a member of the board of the Koret Foundation.
His research papers are available at the Hoover Institution Archives.
Emanuel S. Heller Professor of Law, University of California at Berkeley; Thomas Smith Senior Research Fellow, The Civitas Institute, University of Texas at Austin
John Yoo is the Emanuel Heller Professor of Law at the University of California at Berkeley. He is also the Thomas Smith Senior Research Fellow, Civitas Institute, at the University of Texas at Austin. He is also a Nonresident Senior Fellow at the American Enterprise Institute.
His most recent book, The Politically Incorrect Guide to the Supreme Court, co-authored with Robert Delahunty, was published in 2023. Professor Yoo’s other books include Defender-in-Chief: Trump’s Fight for Presidential Power; Striking Power: How Cyber, Robots, and Space Weapons Change the Rules for War; Point of Attack: Preventive War, International Law, and Global Welfare; and Crisis and Command: A History of Executive Power from George Washington to George Bush.
He is a co-author of volumes 1 and 2 of R. Rossum, G. Tarr, V. Munoz & J. Yoo American Constitution Law (Routledge, 2026), and a co-editor of the eight-volume series on the 250th anniversary of the American Revolution, We Hold These Truths, with Yuval Levin and Adam White of the American Enterprise Institute.
Professor Yoo has published more than 100 articles in academic journals on subjects including national security, constitutional law, international law, and the Supreme Court. He also regularly contributes to the editorial pages of the Wall Street Journal, New York Times, Washington Post, Los Angeles Times, and National Review, among others.
Professor Yoo has served in all three branches of government. He was an official in the U.S. Department of Justice, where he worked on national security and terrorism issues after the 9/11 attacks. He served as general counsel of the U.S. Senate Judiciary Committee. He has been a law clerk for Supreme Court Justice Clarence Thomas and federal appeals Judge Laurence Silberman. He has been a visiting professor at the University of Texas at Austin’s School of Civic Leadership, Seoul National University, the Interdisciplinary Center Herzliya, Keio University, Trento University, the University of Chicago, and the Free University of Amsterdam.
Professor Yoo supervises the Public Law and Policy Program and the California Constitution Center. He also serves on the boards of Founding Forward, the Washington Legal Foundation, the Pacific Legal Foundation, the Ulysses Grant Institute, the Federalist Society’s Separation of Powers and Federalism Division, the Universidad Cientifica del Sur Law School, and the Asia-Pacific Law Institute at Seoul National University. He is a winner of the Federalist Society’s Paul Bator award and the Heritage Foundation’s Edwin Meese III Originalism Lectureship.
Professor Yoo graduated from Yale Law School and summa cum laude from Harvard College.
Retired Partner, Sullivan & Cromwell LLP
Upon his resignation as the Legal Adviser of the U.S. Department of State in January 1993, Mr. Williamson rejoined Sullivan & Cromwell's Washington, D.C. office. He originally joined the Firm in 1964 after graduating from New York University School of Law, where he was an editor of the Law Review. He became a partner of the Firm in 1971, moved to its London office in 1976, returned to its New York office in 1979, moved to its Washington, D.C. office in 1988 and became Of Counsel in 2007. In 2018, he retired from the firm.
At Sullivan & Cromwell, Mr. Williamson engaged in a broad and wide-ranging domestic and international financing and transactions practice, as well as advice with respect to corporate governance issues, the United States’ economic sanctions laws, the ethics rules applicable to government officials and the immunities of foreign sovereigns and international organizations.
Mr. Williamson has been an active participant on panels and other forums involving public international law and national security issues, such as the domestic and international bases for the use of force, the role of the United States with respect to the International Criminal Court, the law of the sea and the application of international legal principles in the war against terrorism.
Mr. Williamson is a member of the Council on Foreign Relations and a former member of the Executive Council of the American Society of International Law, the Executive Committees of the Business and Advisory Committee (BIAC) to the OECD and the U.S. Council for International Business, the United States Advisory Board of NTT DoCoMo, Inc. and the Board of Directors of Triton Oil & Gas Limited.
Mr. Williamson has served on the Boards of Regents and Trustees of the University of the South and as chair of the Board of Regents. He is currently a member of the Board of Directors of the American Council of Trustees and Alumni, a higher education watchdog.
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