U.S. Leaders at COP28: Updates on Members of Congress and Other U.S. Officials at the 2023 U.N. Climate Summit

This list compiles the U.S. federal and elected officials who attended the U.N. climate summit, COP28, in Dubai. This list is updated as of December 11 and will continue to be updated.

U.S. Senators:

• Sen. Ben Cardin (D-Md.), Chair, Foreign Relations Committee
• Sen. Tom Carper (D-Del.), Chair, Environment and Public Works Committee
• Sen. Chris Coons (D-Del.), Chair, Ethics Committee
• Sen. Ed Markey (D-Mass.)
• Sen. Lisa Murkowski (R-Alaska), Ranking Member, Indian Affairs Committee
• Sen. Brian Schatz (D-Hawaii), Chair, Indian Affairs Committee
• Sen. Sheldon Whitehouse (D-R.I.), Chair, Budget Committee

U.S. Representatives:

• Rep. Kelly Armstrong (R-N.D.)
• Rep. Michael Burgess (R-Texas)
• Rep. Salud Carbajal (D-Calif.)
• Rep. Buddy Carter (R-Ga.)
• Rep. Troy Carter (D-La.)
• Rep. Kathy Castor (D-Fla.)
• Rep. Lori Chavez-DeRemer (R-Ore.)
• Rep. John Curtis (R-Utah)
• Rep. Diana DeGette (D-Colo.)
• Rep. Nanette Diaz Barragán (D-Calif.)
• Rep. Jeff Duncan (R-S.C.)
• Rep. Andrew Garbarino (R-N.Y)
• Rep. Garret Graves (R-La.)
• Rep. Chrissy Houlahan (D-Pa.)
• Rep. Ann Kuster (D-N.H.)
• Rep. Susie Lee (D-Nev.)
• Rep. Julia Letlow (R-La.)
• Rep. Mariannette Miller-Meeks (R-Iowa)
• Rep. Frank Pallone (D-N.J.), Ranking Member, Energy and Commerce
• Rep. Scott Peters (D-Calif.)
• Rep. Brad Schneider (D-Ill.)
• Rep. David Valadao (R-Calif.)
• Rep. Tim Walberg (R-Mich.)
• Rep. Brandon Williams (R-N.Y.)

Other notable U.S. federal officials who attended COP28 in-person or gave virtual remarks include:

• Bama Athreya, Deputy Assistant Administrator for the Gender Equality and Women's Empowerment Hub, USAID
• John Balbus, Deputy Assistant Secretary for Climate Change and Health Equity, Department of Health and Human Services
• Ko Barrett, Senior Advisor for Climate, National Oceanic and Atmospheric Administration 
• Rostin Behnam, Chairman, Commodity Futures Trading Commission 
• Meredith Berger, Assistant Secretary of the Navy for Energy, Installations, and Environment, United States Navy
• Anthony Blinken, Secretary of State
• Gillian Caldwell, Chief Climate Officer, USAID
• Kate Calvin, Chief Scientist, NASA
• Dr. Hillary Carter, Principal Deputy Director for the Bureau of Global Health Security and Diplomacy, State Department 
• Julie Cerqueira,Principal Deputy Assistant Secretary, Office of International Affairs, U.S. Department of Energy 
• Giulia Christenson, Senior Advisor, Office of the U.S. Special Presidential Envoy for Climate, State Department
• Brad Crabtree, Assistant Secretary, U.S. Department of Energy's Office of Fossil Energy and Carbon Management
• Thomas Debass, Managing Director for Global Partnerships, US Department of State
• Rick Duke, Deputy Special Envoy for Climate, Office of the U.S. Special Presidential Envoy for Climate
• Enoh Ebong, Director, U.S. Trade and Development Agency
• Dina Esposito, Assistant to the Administrator, USAID 
• Carla Frisch, Acting Executive Director and Principal Deputy Director, Office of Policy, DOE 
• Kate Guy, Senior Advisor and Managing Director for Cross-Cutting Issues, Office of the Special Presidential Envoy for Climate, State Department
• Kamala Harris, Vice President of the United States of America
• Dr. Kathyrn Huff, Assistant Secretary, Office of Nuclear Energy, DOE
• Sarah Kapnick, Chief Scientist, National Oceanic and Atmospheric Administration
• John Kerry, Special Presidential Envoy for Climate
• Jennifer Klein, Assistant to the President and Director, White House Gender Policy Council
• Dr. Chavonda Jacobs-Young, Under Secretary for Research, Education, and Economics and Chief Scientist, USDA
• Marisa Lago, Undersecretary of Commerce for International Trade, Department of Commerce
• Alexia Latortue, Assistant Secretary for International Trade and Development, U.S. Department of the Treasury
• Thea Lee, Deputy Undersecretary for International Affairs, Department of Labor
• Admiral Rachel Levine, Assistant Secretary for Health, Department of Health and Human Services
• Reta Jo Lewis, Chair, U.S. Export-Import Bank
• Jennifer R. Littlejohn, Assistant Secretary for Oceans, Environment, and Science, Department of State
• David Livingston, Senior Advisor to the Special Presidential Envoy for Climate, Department of State
• Brenda Mallory, Chair, White House Council on Environmental Quality
• Andrew Mayock, Federal Chief Sustainability Officer, White House Council on Environmental Quality
• Jeff Marootian, Principal Deputy Assistant Secretary, DOE Office of Energy Efficiency and Renewable Energy
• Jack McCaslin, Senior Advisor to the Special Presidential Envoy for Climate, State Department
• Carlos Monje, Undersecretary for Policy, Department of Transportation
• Michael Morgan, Assistant Secretary of Commerce, NOAA
• Jacqueline Musiitwa, Senior Climate Finance Advisor, USAID
• Bill Nelson, Administrator, National Aeronautics and Space Association
• Loyce Pace, Assistant Secretary for Global Affairs, Department of Health and Human Services
• John Podesta, Senior Advisor, White House
• Samantha Power, Administrator, United States Agency for International Development
• Annie Petsonk, Assistant Secretary of Transportation for Aviation and International Affairs, U.S. Department of Transportation
• Michael Regan, Administrator, Environmental Protection Agency
• Michael Schiffer, Assistant Administrator of the Bureau for Asia, USAID
• Dr. Julian Reyes, Assistant Director for Climate Services, White House Office of Science and Technology Policy
• Dr. Rick Spinrad, Under Secretary of Commerce for Oceans and Atmosphere and Administrator, National Oceanic and Atmospheric Administration
• Karen St. Germain, Earth Science Division Director, NASA
• Ellen Stofan, Undersecretary for Science and Research, Smithsonian
• Trigg Talley, Special Advisor to the Special Presidential Envoy for Climate Change and Director of Office of Global Change, Department of State
• Josh Tewksbury, Director of the Tropical Research Institute, Smithsonian
• David Turk, Deputy Secretary, U.S. Department of Energy
• Candace Vahlsing, Senior Policy Advisor for Climate, USAID
• Tom Vilsack, Secretary of Agriculture, USDA
• Adam Wang-Levine, Deputy Assistant Secretary, U.S. Department of the Treasury
• Anne Witowsky, Assistant Secretary of State for the Bureau of Conflict and Stabilization Operations, Department of State
• Shalanda Young, Director, U.S. Office of Management and Budget
• Ali Zaidi, National Climate Advisor, White House
• Ethan Zindler, Climate Counselor, U.S. Department of the Treasury

Governors at COP28:

• Michelle Lujan Grisham, Governor, New Mexico

State government officials at COP28:

• Serena Coleman McIlwain, Secretary of the Environment, Maryland Department of Environment

City and local government officials at COP28:

• Anan Abu-Taleb, Mayor, Oak Park, Illinois
• Nicola Armacost, Mayor, Hastings-on-Hudson, New York
• Jeni Arndt, Mayor, Fort Collins, Colorado
• Leirion Gaylor Baird, Mayor, Lincoln, Nebraska
• Ravi Bhalla, Mayor, Hoboken, New Jersey
• Richard Bissen, Mayor, Maui, Hawaii
• Muriel Elizabeth Bowser, Mayor, Washington, D.C.
• Barbara Buffaloe, Mayor, Columbia, Missouri
• LaToya Cantrell, Mayor, New Orleans, Louisiana
• Brad Cavanagh, Mayor, Dubuque, Iowa
• Justin Bibb Cleveland, Mayor, Cuyahoga County, Ohio
• Frank Cownie, Mayor, Des Moines, Iowa
• Wade Crowfoot, Secretary for Natural Resources, California
• John Giles, Mayor, Mesa, Arizona
• Andrew J. Ginther, Mayor, Columbus, Ohio
• Martha Guerrero, Mayor, West Sacramento, California
• Keith James, Mayor, West Palm Beach, Florida
• Elizabeth Kautz, Mayor, Burnsville, Minnesota
• Indya Kincannon, Mayor, Knoxville, Tennessee
• Chokwe Antar Lumumba, Mayor, Jackson, Mississippi
• Lauren McLean, Mayor, Boise, Idaho
• Lily Mei, Mayor, Freemont, California
• Melanie Piana, Mayor, Ferndale, Michigan
• Aftab Pureval, Mayor, Cincinnati, Ohio
• Mitch Reynolds, Mayor, La Crosse, Wisconsin
• Nan H. Rich, Mayor, Broward County, Florida
• Daniel Rickenmann, Mayor, Columbia, South Carolina
• Satya Rhodes-Conway, Mayor, Madison, Wisconsin
• Thomas M. Roach, Mayor, White Plains, New York
• Andy Schor, Mayor, Lansing, Michigan
• Cheryl Lynne Selby, Mayor, Olympia, Washington
• Errick D. Simmons, Mayor, Greenville, Mississippi
• Wayne Smith, Mayor, Oberlin, Ohio
• Donnie Tuck, Mayor, Hampton, Virginia
• Kirk Watson, Mayor, Travis County, Texas

This article is based on our own observations from COP28 events, press releases, and news stories, and we may have inadvertently missed U.S. officials at COP28.