Andrew Yang, founder of Venture for America and 2020 Democratic presidential candidate, stands on stage during the Democratic presidential candidate debate in Miami, Florida, U.S., on Thursday, June 27, 2019. Former U.S. Vice President Joe Biden opened the second night of the Democratic presidential debates with a direct attack on President Donald Trump’s handling of the economy, setting the tone for a night in which he and nine other hopefuls sought to demonstrate for voters the stark choice they will have in the 2020 election. Photographer: Jayme Gershen/Bloomberg via Getty Images