Republican U.S. presidential candidates participate in their fourth debate of

Republican presidential candidate and businessman Vivek Ramaswamy holds up a handwritten sign referring to fellow candidate and former U.S. Ambassador to the United Nations Nikki Haley as he speaks during the fourth Republican candidates’ debate of the 2024 U.S. presidential campaign hosted by NewsNation at the University of Alabama in Tuscaloosa, Alabama, U.S. December 6, 2023. REUTERS/Brian Snyder