Vice President Kamala Harris, left, and President Joe Biden arrive for an event in the East Room of the White House, May 9, 2024, in Washington. She's already broken barriers, and now Harris could soon become the first Black woman to head a major party's presidential ticket after President Joe Biden's ended his reelection bid. The 59-year-old Harris was endorsed by Biden on Sunday, July 21, after he stepped aside amid widespread concerns about the viability of his candidacy. (AP Photo/Evan Vucci, File)