U.S. President Donald Trump rubs his eyes as he attends the 2019 United Nations Climate Action Summit with Acting White House Chief of Staff Mick Mulvaney, U.S. Secretary of State Mike Pompeo, Vice President Mike Pence and U.S. Ambassador to the United Nations Kelly Craft at U.N. headquarters in New York City, New York, U.S., September 23, 2019. REUTERS/Jonathan Ernst