FILE PHOTO: Democratic 2020 U.S. presidential candidate and former Vice President Joe Biden speaks at an event at the Mississippi Valley Fairgrounds in Davenport, Iowa, U.S. June 11, 2019. REUTERS/Jordan Gale
FILE PHOTO: Democratic 2020 U.S. presidential candidate and former Vice President Joe Biden speaks at an event at the Mississippi Valley Fairgrounds in Davenport, Iowa, U.S. June 11, 2019. REUTERS/Jordan Gale