The elimination of the State Department’s Office of Global Change leaves the world’s largest historical polluter with no official presence at COP30 in Brazil later this year.

The proposal is President Trump’s most consequential step yet to derail federal climate efforts and appears to represent a shift toward outright denial of the scientific consensus.

The Trump administration’s EPA is set to propose reversing the 2009 endangerment finding that classified carbon dioxide and other greenhouse gases as pollutants threatening human health, a move that could gut US climate regulations.

An opinion by the World Court finds new legal requirements in the Paris Agreement, raising legal questions about the U.S. signing the treaty with Senate approval