Candidates discuss an issue during the tenth Democratic 2020 presidential

Democratic 2020 U.S. presidential candidates former New York Mayor Mike Bloomberg, former South Bend Mayor Pete Buttigieg, Senator Elizabeth Warren, Senator Bernie Sanders and former Vice President Joe Biden discuss an issue during the tenth Democratic 2020 presidential debate at the Gaillard Center in Charleston, South Carolina, U.S., February 25, 2020. REUTERS/Jonathan Ernst