Democratic Presidential hopefuls former Vice-President Joe Biden, Sen. Bernie Sanders, Sen Amy Klobuchar, Rep. Tim Ryan, businessmen Tom Steyer and Andrew Yang and author Marianne Williamson speak at the Philadelphia Council AFL-CIO Workers’ Presidential Summit, at the Pennsylvania Convention Center in Philadelphia, PA, on September 17, 2019. (Photo by Bastiaan Slabbers/NurPhoto via Getty Images)