According to CoinMeta, as world leaders convene at the United Nations Climate Summit in Antalya, Turkey, today, 197 countries will be participating. However, the United States is absent. The U.S. has refused to participate in this global effort to mitigate climate change for the second consecutive year. Trump once described global warming as "the biggest scam in human history." He not only withdrew the U.S. from the 2015 Paris Climate Agreement but also stopped sending American delegations to annual climate summits. The U.S. no longer seeks to reduce greenhouse gas emissions, has cut support for scientific research related to global warming, and has ceased financial assistance aimed at helping vulnerable countries cope with the impacts of climate change. Some people are already looking ahead: if Democrats are elected president in 2028, the U.S. might have a chance to return to the United Nations climate negotiation process. John Kerry, who served as the U.S. special envoy on climate under the Biden administration, said, "If the trends demonstrated by these elections continue, we will elect someone who is truly committed to taking concrete action on climate issues." Kerry believes that as long as the U.S. is not arrogant and shows a willingness to cooperate, other countries will welcome its return.