President Donald Trump listens during the the United Nations Climate Action Summit during the General Assembly, Monday, Sept. 23, 2019, in New York. From left, National security adviser Robert C. O'Brien, White House chief of staff Mick Mulvaney, Secretary of State Mike Pompeo, Trump, Vice President Mike Pence, and U.S. ambassador to the United Nations Kelly Craft. (AP Photo/Evan Vucci)