John Podesta, U.S. climate envoy, center right, and U.S. Deputy Climate Envoy Sue Biniaz, center, walk outside the venue for the COP29 U.N. Climate Summit, Saturday, Nov. 23, 2024, in Baku, Azerbaijan. (AP Photo/Sergei Grits)

John Podesta, U.S. climate envoy, walks through a crowd during the COP29 U.N. Climate Summit, Saturday, Nov. 23, 2024, in Baku, Azerbaijan. (AP Photo/Peter Dejong)

FILE - President Joe Biden speaks during a Hanukkah reception in the East Room of the White House in Washington, Dec. 16, 2024. (AP Photo/Rod Lamkey, Jr., File)

President Joe Biden speaks during a Hanukkah reception in the East Room of the White House in Washington, Monday, Dec. 16, 2024. (AP Photo/Rod Lamkey, Jr.)

FILE - President Joe Biden meets with President-elect Donald Trump in the Oval Office of the White House, Wednesday, Nov. 13, 2024, in Washington. (AP Photo/Evan Vucci, File)