Deputy Secretary of Energy
James P. Danly was sworn in as Deputy Secretary on June 9, 2025.
Before arriving at the Department, Deputy Secretary Danly was a partner and the Energy Regulatory Group leader at Skadden in Washington, D.C. This followed his service at the Federal Energy Regulatory Commission, first as the Commission’s general counsel then as the commissioner and chairman.
Deputy Secretary Danly was an officer in the United States Army. He served two tours in Iraq, receiving a Bronze Star and a Purple Heart.
A graduate of Yale University, Deputy Secretary Danly earned his J.D. from Vanderbilt University Law School. He clerked for Judge Danny J. Boggs of the Sixth Circuit.
Deputy Secretary of Energy
James P. Danly was sworn in as Deputy Secretary on June 9, 2025.
Before arriving at the Department, Deputy Secretary Danly was a partner and the Energy Regulatory Group leader at Skadden in Washington, D.C. This followed his service at the Federal Energy Regulatory Commission, first as the Commission’s general counsel then as the commissioner and chairman.
Deputy Secretary Danly was an officer in the United States Army. He served two tours in Iraq, receiving a Bronze Star and a Purple Heart.
A graduate of Yale University, Deputy Secretary Danly earned his J.D. from Vanderbilt University Law School. He clerked for Judge Danny J. Boggs of the Sixth Circuit.
Director and Associate General Counsel, Tennessee Valley Authority
David Ayliffe serves in TVA’s Office of the General Counsel where he is responsible for directing litigation involving TVA and leading the team that represents TVA in all non-employment litigation in federal trial and appellate courts across the TVA region. An experienced litigator, David has represented TVA as lead counsel in cases at both the trial and appellate level and also has represented TVA in cases before the United States Supreme Court. During his twenty years at TVA, David’s work has extended beyond litigation to include experience with a broad range of issues of legal and strategic significance to TVA.
Prior to joining TVA, David served as a non-commissioned officer in the United States Marine Corps and was honorably discharged in 2003. David earned a Bachelor of Arts in History and German from the University of Tennessee, Knoxville, and his law degree from the University of Memphis.
David lives in Knoxville with his wife, Ying, and their two children. Outside of work, he is involved in various professional and community organizations. David is a member of the Federalist Society, serving on the Steering Committee for the Knoxville Lawyers Chapter, and he is a member of the Knoxville Symphony Orchestra Board. He is a graduate of Leadership Knoxville’s class of 2019. David also serves
as an Elder at Eastminster Presbyterian Church in Knoxville.
Deputy Secretary of Energy
James P. Danly was sworn in as Deputy Secretary on June 9, 2025.
Before arriving at the Department, Deputy Secretary Danly was a partner and the Energy Regulatory Group leader at Skadden in Washington, D.C. This followed his service at the Federal Energy Regulatory Commission, first as the Commission’s general counsel then as the commissioner and chairman.
Deputy Secretary Danly was an officer in the United States Army. He served two tours in Iraq, receiving a Bronze Star and a Purple Heart.
A graduate of Yale University, Deputy Secretary Danly earned his J.D. from Vanderbilt University Law School. He clerked for Judge Danny J. Boggs of the Sixth Circuit.
Deputy Chief, General Crimes Unit and Acting Appellate Chief, Middle District of Tennessee, Department of Justice
Partner, Cooper & Kirk, PLLC
Clark L. Hildabrand focuses his practice at Cooper & Kirk, PLLC, on constitutional and administrative law and complex commercial litigation. Mr. Hildabrand has briefed and argued cases in both state and federal appellate courts. He clerked for Judge Jeffrey S. Sutton of the U.S. Court of Appeals for the Sixth Circuit and then practiced in the Washington, D.C. office of Sullivan & Cromwell, LLP. Subsequently, he served in the Tennessee Attorney General’s Office, first as Assistant Solicitor General and later as Deputy Chief of Staff & Senior Counsel.
Mr. Hildabrand graduated from Yale Law School and Washington & Lee University, summa cum laude. During college, he studied a year at Worcester College, University of Oxford. At Yale Law School, Mr. Hildabrand was a finalist in the Morris Tyler Moot Court of Appeals, earning the Benjamin N. Cardozo Prize. He also served as an Articles Editor on the Yale Law Journal. Mr. Hildabrand is admitted to the bars of the State of Tennessee and the District of Columbia.
Deputy Secretary of Energy
James P. Danly was sworn in as Deputy Secretary on June 9, 2025.
Before arriving at the Department, Deputy Secretary Danly was a partner and the Energy Regulatory Group leader at Skadden in Washington, D.C. This followed his service at the Federal Energy Regulatory Commission, first as the Commission’s general counsel then as the commissioner and chairman.
Deputy Secretary Danly was an officer in the United States Army. He served two tours in Iraq, receiving a Bronze Star and a Purple Heart.
A graduate of Yale University, Deputy Secretary Danly earned his J.D. from Vanderbilt University Law School. He clerked for Judge Danny J. Boggs of the Sixth Circuit.
Partner, Baker Botts
George Fibbe represents clients in complex commercial disputes and regulatory matters, focusing on high-stakes matters across the energy sector. Before joining Baker Botts, he served as the Deputy General Counsel for Litigation, Regulation & Enforcement for the U.S. Department of Energy. Mr. Fibbe is a commercial trial attorney who practiced with Yetter Coleman, LLP in Houston for over ten years. He then served as head of litigation for the petroleum division of an international mining corporation. Before joining the Department of Energy, he served as General Counsel for a private solar company.
Former Acting Assistant Attorney General, United States Department of Justice; Partner, Winston & Strawn LLP
Jonathan “Jon” Brightbill is a trial and appellate lawyer in Winston’s Washington, D.C. office, and a partner in the firm’s Litigation and White Collar, Regulatory Defense, and Investigations Practices. He represents public and private companies, corporate officers, and other individuals across white collar, regulatory defense, and government and internal investigation matters and rulemaking challenges, as well as complex commercial disputes, citizen suits, and class actions. His commercial litigation experience encompasses business disputes, false advertising, consumer protection and fraud, FCA, and extensive class action defense work; antitrust and unfair competition matters; and intellectual property litigation, such as trademarks, patents, and trade secrets.
Jon served as the Nation’s lead environmental civil and criminal enforcement official and litigator, as Acting Assistant Attorney General for the Environment & Natural Resources Division (“ENRD”) of the U.S. Department of Justice (DOJ). Jon led ENRD’s 425 lawyers, overseeing 6,500 active matters and managing an annual budget of more than $150 million. Jon brings highly experienced executive leadership from among the most senior level of DOJ on white collar and regulatory enforcement, as well as on federal policymaking and rulemaking development and challenges. He speaks with authority on government decision-making processes, and the arguments and perspectives that move regulators and enforcers, best advising and positioning clients to deal with challenges.
Jon argued many of the government’s most significant cases during his time with the DOJ. This included the Navigable Waters Protection Rule and Clean Water Rule Repeal (10th Cir., district courts), the Affordable Clean Energy Rule and Clean Power Plan Repeal (D.C. Cir), defense of EPA actions on pesticide tolerances under FIFRA and the FDCA (9th Cir. en banc), among numerous others. Jon represented the United States in trial courts in both enforcement and defensive cases, including federal enforcement action against Jeffrey Lowe and the Tiger King Park, of Netflix fame, securing a first-of-its-kind injunction for violations of the Endangered Species Act and Animal Welfare Act. Jon directed the litigation and briefing of scores of additional federal cases nationwide, covering all of the major environmental and natural resources statutes, such as the Clean Air Act, the Clean Water Act, FIFRA (pesticides), FDCA (food safety), TSCA (toxics), CERCLA (land remediation), RCRA (waste), National Environmental Policy Act, Federal Land Policy and Management Act, and numerous other land- and resource-management statutes.
Jon has unmatched experience litigating legal and technical issues relating to climate change. He argued in the courts of appeals, including the D.C. Circuit, regarding the most significant climate change regulations by EPA, as well as the preemptive scope of the Clean Air Act. Jon also litigated climate change-related credit and trading schemes and international agreements in district court. During Jon’s time in leadership at ENRD, it successfully defeated one of the most wide-ranging lawsuits regarding climate change to date—obtaining a stay pending interlocutory appeal and dismissal just weeks before a scheduled three-month trial on federal government liability for climate change.
An accomplished trial lawyer, prior to working at DOJ, Jon was a partner in the Washington, D.C. office of another global law firm. He not only represents clients in court, but creatively counsels corporations on balancing business needs and realities with a broad range of litigation risks and compliance obligations. Jon is also an Adjunct Professor at Georgetown University Law Center. He served on the American Bar Association’s E-Discovery Working Group for Bankruptcy Practice, and was a frequent lecturer for District of Columbia Bar Association Continuing Legal Education Programs.
Jon served as an appellate clerk for the Honorable D. Brooks Smith, U.S. Court of Appeals for the Third Circuit, after graduating magna cum laude from the Georgetown University Law Center. He worked in state government as an Executive Policy Specialist for air, waste, land remediation, and radiation matters at the Pennsylvania Department of Environmental Protection.
President and Chief Policy Officer, CGCN
Throughout his career, Michael Catanzaro has served in several senior energy and environmental policy positions in the federal government, including the House of Representatives, U.S. Senate, the EPA, and the White House.
Before joining CGCN, Catanzaro served as Special Assistant to President Trump for Domestic Energy and Environmental Policy at the White House National Economic Council. In that role, he helped craft energy and environmental policy at multiple agencies and advised the president on the administration’s major policy decisions in that space. He previously served on the Senate Environment and Public Works Committee and on the Bush-Cheney re-election campaign as a top adviser on energy and environmental policy. Catanzaro was Associate Director for Policy in the White House Council on Environmental Quality and Associate Deputy Administrator of the EPA under former President George W. Bush. He also served as a senior adviser to then-Speaker John Boehner on energy and environmental policy.
Deputy Secretary of Energy
James P. Danly was sworn in as Deputy Secretary on June 9, 2025.
Before arriving at the Department, Deputy Secretary Danly was a partner and the Energy Regulatory Group leader at Skadden in Washington, D.C. This followed his service at the Federal Energy Regulatory Commission, first as the Commission’s general counsel then as the commissioner and chairman.
Deputy Secretary Danly was an officer in the United States Army. He served two tours in Iraq, receiving a Bronze Star and a Purple Heart.
A graduate of Yale University, Deputy Secretary Danly earned his J.D. from Vanderbilt University Law School. He clerked for Judge Danny J. Boggs of the Sixth Circuit.
Chairman, Council on Environmental Quality
Mary B. Neumayr is the current Chairman of the Council on Environmental Quality (CEQ). She was unanimously confirmed by the United States Senate on January 2, 2019, and sworn in as Chairman on January 10, 2019. Prior to her appointment, Ms. Neumayr had been serving as CEQ’s Chief of Staff since March 2017.
Before joining CEQ, Ms. Neumayr served in a variety of positions with the Committee on Energy and Commerce in the United States House of Representatives, including as Deputy Chief Counsel, Energy and Environment (2017); Senior Energy Counsel (2011-2017); and Counsel (2009-2010). Ms. Neumayr also served as Deputy General Counsel for Environment and Nuclear Programs at the Department of Energy (2006-2009) and as Counsel to the Assistant Attorney General for the Environment and Natural Resources Division at the Department of Justice (2003-2006).
Prior to her Government service, Ms. Neumayr was in private legal practice from 1989 through 2003 in New York and San Francisco. She received her B.A. from Thomas Aquinas College and J.D. from the University of California, Hastings College of the Law.
Former Acting Assistant Attorney General, United States Department of Justice; Partner, Winston & Strawn LLP
Jonathan “Jon” Brightbill is a trial and appellate lawyer in Winston’s Washington, D.C. office, and a partner in the firm’s Litigation and White Collar, Regulatory Defense, and Investigations Practices. He represents public and private companies, corporate officers, and other individuals across white collar, regulatory defense, and government and internal investigation matters and rulemaking challenges, as well as complex commercial disputes, citizen suits, and class actions. His commercial litigation experience encompasses business disputes, false advertising, consumer protection and fraud, FCA, and extensive class action defense work; antitrust and unfair competition matters; and intellectual property litigation, such as trademarks, patents, and trade secrets.
Jon served as the Nation’s lead environmental civil and criminal enforcement official and litigator, as Acting Assistant Attorney General for the Environment & Natural Resources Division (“ENRD”) of the U.S. Department of Justice (DOJ). Jon led ENRD’s 425 lawyers, overseeing 6,500 active matters and managing an annual budget of more than $150 million. Jon brings highly experienced executive leadership from among the most senior level of DOJ on white collar and regulatory enforcement, as well as on federal policymaking and rulemaking development and challenges. He speaks with authority on government decision-making processes, and the arguments and perspectives that move regulators and enforcers, best advising and positioning clients to deal with challenges.
Jon argued many of the government’s most significant cases during his time with the DOJ. This included the Navigable Waters Protection Rule and Clean Water Rule Repeal (10th Cir., district courts), the Affordable Clean Energy Rule and Clean Power Plan Repeal (D.C. Cir), defense of EPA actions on pesticide tolerances under FIFRA and the FDCA (9th Cir. en banc), among numerous others. Jon represented the United States in trial courts in both enforcement and defensive cases, including federal enforcement action against Jeffrey Lowe and the Tiger King Park, of Netflix fame, securing a first-of-its-kind injunction for violations of the Endangered Species Act and Animal Welfare Act. Jon directed the litigation and briefing of scores of additional federal cases nationwide, covering all of the major environmental and natural resources statutes, such as the Clean Air Act, the Clean Water Act, FIFRA (pesticides), FDCA (food safety), TSCA (toxics), CERCLA (land remediation), RCRA (waste), National Environmental Policy Act, Federal Land Policy and Management Act, and numerous other land- and resource-management statutes.
Jon has unmatched experience litigating legal and technical issues relating to climate change. He argued in the courts of appeals, including the D.C. Circuit, regarding the most significant climate change regulations by EPA, as well as the preemptive scope of the Clean Air Act. Jon also litigated climate change-related credit and trading schemes and international agreements in district court. During Jon’s time in leadership at ENRD, it successfully defeated one of the most wide-ranging lawsuits regarding climate change to date—obtaining a stay pending interlocutory appeal and dismissal just weeks before a scheduled three-month trial on federal government liability for climate change.
An accomplished trial lawyer, prior to working at DOJ, Jon was a partner in the Washington, D.C. office of another global law firm. He not only represents clients in court, but creatively counsels corporations on balancing business needs and realities with a broad range of litigation risks and compliance obligations. Jon is also an Adjunct Professor at Georgetown University Law Center. He served on the American Bar Association’s E-Discovery Working Group for Bankruptcy Practice, and was a frequent lecturer for District of Columbia Bar Association Continuing Legal Education Programs.
Jon served as an appellate clerk for the Honorable D. Brooks Smith, U.S. Court of Appeals for the Third Circuit, after graduating magna cum laude from the Georgetown University Law Center. He worked in state government as an Executive Policy Specialist for air, waste, land remediation, and radiation matters at the Pennsylvania Department of Environmental Protection.
President and Chief Policy Officer, CGCN
Throughout his career, Michael Catanzaro has served in several senior energy and environmental policy positions in the federal government, including the House of Representatives, U.S. Senate, the EPA, and the White House.
Before joining CGCN, Catanzaro served as Special Assistant to President Trump for Domestic Energy and Environmental Policy at the White House National Economic Council. In that role, he helped craft energy and environmental policy at multiple agencies and advised the president on the administration’s major policy decisions in that space. He previously served on the Senate Environment and Public Works Committee and on the Bush-Cheney re-election campaign as a top adviser on energy and environmental policy. Catanzaro was Associate Director for Policy in the White House Council on Environmental Quality and Associate Deputy Administrator of the EPA under former President George W. Bush. He also served as a senior adviser to then-Speaker John Boehner on energy and environmental policy.
Deputy Secretary of Energy
James P. Danly was sworn in as Deputy Secretary on June 9, 2025.
Before arriving at the Department, Deputy Secretary Danly was a partner and the Energy Regulatory Group leader at Skadden in Washington, D.C. This followed his service at the Federal Energy Regulatory Commission, first as the Commission’s general counsel then as the commissioner and chairman.
Deputy Secretary Danly was an officer in the United States Army. He served two tours in Iraq, receiving a Bronze Star and a Purple Heart.
A graduate of Yale University, Deputy Secretary Danly earned his J.D. from Vanderbilt University Law School. He clerked for Judge Danny J. Boggs of the Sixth Circuit.
Chairman, Council on Environmental Quality
Mary B. Neumayr is the current Chairman of the Council on Environmental Quality (CEQ). She was unanimously confirmed by the United States Senate on January 2, 2019, and sworn in as Chairman on January 10, 2019. Prior to her appointment, Ms. Neumayr had been serving as CEQ’s Chief of Staff since March 2017.
Before joining CEQ, Ms. Neumayr served in a variety of positions with the Committee on Energy and Commerce in the United States House of Representatives, including as Deputy Chief Counsel, Energy and Environment (2017); Senior Energy Counsel (2011-2017); and Counsel (2009-2010). Ms. Neumayr also served as Deputy General Counsel for Environment and Nuclear Programs at the Department of Energy (2006-2009) and as Counsel to the Assistant Attorney General for the Environment and Natural Resources Division at the Department of Justice (2003-2006).
Prior to her Government service, Ms. Neumayr was in private legal practice from 1989 through 2003 in New York and San Francisco. She received her B.A. from Thomas Aquinas College and J.D. from the University of California, Hastings College of the Law.
Partner, Boyden Gray PLLC
Michael Buschbacher is a partner at Boyden Gray PLLC. He represents public and private companies, trade associations, non-profits, and individuals in high-stakes litigation and administrative proceedings, with a particular focus on environmental and energy matters.
In addition to trial-level work, Mr. Buschbacher maintains an active appellate practice, both as merits counsel and as counsel for amici curiae. He has written amicus briefs quoted by the Seventh and Ninth Circuits. And his Supreme Court advocacy has been cited by The New Yorker, The New York Times, and E&E News. Mr. Buschbacher’s commentary on legal issues has been published in The Wall Street Journal, Newsweek, and The American Conservative.
Before joining the firm, Mr. Buschbacher served at the U.S. Department of Justice as counsel to the Assistant Attorney General for the Environment and Natural Resources Division. There, he advised senior Department leadership, served as the lead attorney on several lawsuits, and helped draft policy memoranda for the Department on the proper scope and procedure for environmental enforcement. Prior to serving in the government, Mr. Buschbacher was an associate in the D.C. office of Sidley Austin.
Mr. Buschbacher is a former clerk to Judge Alice M. Batchelder of the U.S. Court of Appeals for the Sixth Circuit and to Magistrate Judge Paul R. Cherry of the U.S. District Court for the Northern District of Indiana.
Mr. Buschbacher holds a B.A. in Music and Germanic Studies from Indiana University and a J.D., magna cum laude, from Notre Dame Law School.
Senior Manager, Clean Energy, World Resources Institute
Jennifer Chen, Senior Manager at World Resources Institute, helps shape electricity, transmission and governance policies with an eye toward modernizing grid infrastructure, scaling up clean energy and driving cost-effective electrification. She has written and presented on these topics, including testifying before the U.S. Congress and the U.S. Federal Energy Regulatory Commission (FERC).
Previously, Jennifer led federal electricity policy work at the Nicholas Institute, a think tank for environmental policy solutions at Duke University. She was an attorney with the Natural Resources Defense Council, where she spearheaded environmental NGO coalition efforts to advocate for an efficient and flexible power system. She also has experience working with electricity customer and renewable energy groups as an independent consultant and began her energy career at FERC.
Jennifer earned a J.D. from New York University and a Physics Ph.D. from the University of Chicago. She is a member of the California Bar and the District of Columbia Bar and is admitted to the U.S. Court of Appeals for the District of Columbia Circuit. She is a Senior Fellow in electricity policy at R Street, a board member at New Energy Economics, and a member of the U.S. Department of Energy Electricity Advisory Committee.
Counsel, Boyden Gray PLLC
Jim Wedeking is counsel at Boyden Gray PLLC. He has extensive experience with environmental regulations, providing compliance counseling for large industrial and agricultural companies and their related trade associations, drafting comments on proposed environmental rulemakings from a variety of federal agencies, and challenging those rules in court. For over 20 years he has helped companies obtain various permits and other authorizations for constructing major infrastructure projects, including fossil fuel-fired power plants, natural gas pipelines, and offshore wind turbines, as well as defend those permits and authorizations through litigation. Mr. Wedeking frequently writes on federal environmental law topics, including for the Washington Legal Foundation.
He has also counseled clients on several Freedom of Information Act matters, including the protection of confidential business information from disclosure to third parties and how the Supreme Court’s Food Marketing Institute v. Argus Leader Media decision increased protections for company information provided to regulatory agencies.
Before joining the firm, Mr. Wedeking was counsel in Sidley Austin’s Washington, D.C. environmental, health, and safety practice group. There, he represented industrial companies in defending against civil and criminal enforcement actions and toxic tort suits.
Mr. Wedeking received a J.D., cum laude, from the Catholic University of America Columbus School of Law and a B.A. in Criminology and Criminal Justice from the University of Maryland.
Partner, Steptoe & Johnson
Marc Spitzer served as a former commissioner on the Federal Energy Regulatory Commission (FERC) from July 2006 until December 2011. His practice involves counselling and representing utilities and energy companies before the FERC, at state utility commissions, Congress, federal agencies, and state legislatures. Marc's clients rely on his deep understanding of the energy sector and its policy and regulatory regimes, backed by years in appointed and elected government service. His experience enables him to advise clients through all stages of the energy supply chain from production, transmission, and distribution. Marc’s practice extends to power, gas, and oil proceedings before FERC and he has proven experience in all energy resources.
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