Todd Stern was “a leading architect of the Obama administration’s international climate change strategy,” according to Politico. Todd was appointed by former Secretary of State Hillary Clinton to the position of U.S. Special Envoy on Climate Change where he led talks at the United Nations climate change conferences and smaller sessions. He was the chief U.S. negotiator of the Paris Climate Agreement. Todd previously served in the Clinton administration as Assistant to the President and as Staff Secretary in the White House from 1993 to 1998, during which time he also acted as the senior White House negotiator for the Kyoto Protocol and Buenos Aires negotiations.