Partner, Secil Law
John Irving brings nearly three decades of experience in white collar criminal defense, government investigations, and high-stakes congressional and corporate inquiries. A former federal prosecutor and trusted advisor within the U.S. Department of Justice and the Environmental Protection Agency, John is known for his calm under pressure, strategic clarity, and unwavering discretion.
His clients have included Members of Congress, senior executives, political appointees, and corporate entities navigating complex criminal, civil, and regulatory matters—including matters that have dominated national headlines. John’s practice today is defined by sophisticated representation in sensitive investigations, classified matters, and strategic crisis response—often involving multiple enforcement authorities.
John served for over a decade in the U.S. Department of Justice, including as an Assistant U.S. Attorney in Washington, D.C., where he prosecuted a wide range of criminal cases and appeared regularly in court. He later served as Counsel to two Deputy Attorneys General and as Counsel to the Assistant Attorney General of DOJ’s Environment and Natural Resources Division, advising on departmental policy and enforcement matters at the highest levels.
Prior to his tenure at DOJ, John served as Investigative Counsel to the (then-named) U.S. House Committee on Government Reform & Oversight and as an Associate Independent Counsel in the investigation of former HUD Secretary Henry Cisneros.
Before joining SECIL Law, John was a Partner at E&W Law, a boutique firm focused on environmental and white-collar litigation, and previously spent over a decade at Holland & Knight LLP in Washington, D.C. There, he was a key member of the firm’s White-Collar Defense, Investigations & Compliance team.
His private practice experience includes:
John’s clients appreciate his deep fluency in government processes, his strategic precision in high-pressure moments, and his ability to quietly resolve matters that others cannot.
Partner, King & Spalding LLP
Granta Nakayama specializes in energy and environmental issues. A partner in our Environmental practice with a focus on energy, Granta represents companies in a range of regulatory and enforcement matters.
With training as a nuclear engineer and more than a decade of experience as a practicing engineer and technical manager, Granta represents clients with products or services regulated by the Environmental Protection Agency (EPA) and Consumer Product Safety Commission (CPSC), along with state government agencies such as the California Air Resources Board. He defends companies in enforcement actions and litigation involving regulations and rate proceedings, and represents their interests in agency rulemakings and Congressional matters.
From 2005 to 2009, Granta served as Assistant Administrator for the EPA Office of Enforcement and Compliance Assurance. In that role, he led 3,400 employees in a national enforcement and compliance program covering air, water, waste, toxic chemicals and pesticides. During his tenure, EPA achieved record annual pollutant reductions (more than 3 billion pounds) and injunctive relief (over $11 billion).
The National Law Journal has recognized Granta as a 2016 "Energy and Environmental Trailblazer." He has been listed by The Legal 500 every year since 2010, and was recognized as a "Hall of Famer" in both the environmental litigation and regulatory and the rail and road litigation and regulatory sections in 2020. He has also been ranked in each edition of Chambers USA since 2010.
Partner, Sidley Austin LLP
JUSTIN SAVAGE is a global co-leader of the firm’s Environmental, Health, and Safety practice and co-leads the Automotive and Mobility sector team, where he is a leading strategist for companies navigating the intersection of complex regulation, high-stakes litigation, and transformative industry change. For nearly three decades, he has led clients through their most consequential environmental, health, and safety (EH&S) disputes and mobility-sector challenges, earning a reputation as both a trusted counselor and a forceful advocate in the courtroom and the boardroom. A core part of Justin’s practice also focuses on regulatory strategy and market entry, advising emerging technology companies, new market entrants, and established industry leaders on launching new products, technologies, and business models. He regularly counsel clients in emerging fields such as robotics and AI on engaging with regulators, anticipating enforcement and compliance risk, and building defensible regulatory strategies that support growth rather than slow it.
Clients praise Justin as “an excellent litigator… strategically clever and creative… attentive, thoughtful and willing to go above and beyond” (Chambers USA 2025). Chambers USA has ranked him for Band 1 for Environment in District of Columbia (2017–2025) and Band 3 for Transportation: Road (Automotive) in USA—Nationwide (2023–2025).
Justin has won some of the most closely watched EH&S and transportation disputes of the past two decades and guided companies through crises where business continuity, brand reputation, and regulatory survival were on the line. His leadership has been repeatedly recognized: he is a three-time Law360 Environmental “MVP” (2018, 2024, 2025) and a Lawdragon “500 Global Leaders in Crisis Management” (2025-2026). He is the first call for companies facing bet-the-company challenges.
Justin’s clients concentrate in heavily regulated industries, including auto and mobility, aviation, chemicals, data centers, energy, mining, and refining. Justin litigates and counsels across the spectrum of U.S. environmental, transportation, and administrative laws, including the Clean Air Act (Title I, mobile sources, and fuels), incident response, RMP, NHTSA, Clean Water Act, TSCA, CSB investigations, APA claims, FOIA litigation, NEPA, and the Safe Drinking Water Act.
Prior to joining Sidley, Justin served for nearly a decade at the Environmental Enforcement Section of the U.S. Department of Justice, where he led teams in several multi-billion dollar enforcement cases. In his career, Justin has regularly taught on a range of environmental and litigation topics. For several years, Justin served as an instructor at the Justice Department’s National Advocacy Center where he taught hundreds of Assistant U.S. Attorneys and other agency lawyers on topics that included trial advocacy and evidence. Since rejoining private practice, Justin has served eight times as a faculty member for the American Law Institute’s Environmental Litigation program. He also lectured on a range of litigation and trial topics for bar associations and organizations, including serving as an instructor for the FAA on trial advocacy.
Judge, United States Court of Appeals, Sixth Circuit
Amul R. Thapar serves as a judge on the United States Court of Appeals for the Sixth Circuit. His judicial career began in 2007 when President George W. Bush nominated him to serve on the Eastern District of Kentucky, making him the first South Asian Article III judge in American history. In 2017, he became President Donald J. Trump’s first appellate court nominee.
Before joining the bench, Judge Thapar served as the United States Attorney for the Eastern District of Kentucky. While United States Attorney, Judge Thapar worked on the Attorney General’s Advisory Committee (“AGAC”) and chaired the AGAC’s Controlled Substances and Asset Forfeiture subcommittee. He also served on the Terrorism and National Security subcommittee, the Violent Crime subcommittee, and the Child Exploitation working group.
Judge Thapar has worked in private practice, at Williams & Connolly in Washington, D.C., and Squire, Sanders & Dempsey in Cincinnati, Ohio. He also served as an Assistant United States Attorney in both the Southern District of Ohio and the District of Columbia.
Judge Thapar received his undergraduate degree from Boston College and his law degree from the University of California, Berkeley. After graduating, Judge Thapar worked as a law clerk to the Honorable S. Arthur Spiegel of the United States District Court for the Southern District of Ohio, and the Honorable Nathaniel R. Jones of the United States Court of Appeals for the Sixth Circuit.
Judge Thapar has also published in the Yale Law Journal, Michigan Law Review, and Catholic University Law Review. He teaches courses on originalism, the Federalists and Anti-Federalists, and legal writing at Notre Dame Law School, the University of Virginia School of Law, and Vanderbilt Law School.
Executive Vice President, The Federalist Society
Dean Reuter is Executive Vice President at the Federalist Society for Law and Public Policy Studies. He has served in two federal government agency Offices of the Inspector General, as Counsel to the Inspector General and Deputy Inspector General, responsible for policing the use of federal funds granted and contracted through those agencies. As such, he helped conduct and oversee criminal investigations across the country. He is the principal author of the non-fiction book, The Hidden Nazi: The Untold Story of America's Deal with the Devil, and editor of Liberty’s Nemesis: The Unchecked Expansion of the State and Confronting Terror: 9/11 and the Future of American National Security. He was appointed by the President and served as Vice-Chairman of the Board of Directors of the Corporation for National and Community Service, and recently served as an appointee on the U.S. Commission on Presidential Scholars. He is a graduate of Hood College (BA with Honors) and the University of Maryland School of Law.
Clearing the Air: Recent Trump Administration Reforms to Environmental Criminal Enforcement
John Irving, Granta Nakayama, Justin Savage
With the growth of the administrative state over the last half-century, an equal expansion has...
Talks With Authors: Judge Amul Thapar on "The People's Justice"
Amul R. Thapar, Dean Reuter
On June 20, Judge Amul Thapar of the Sixth Circuit published "The People's Justice," in...