(Jeenah Moon for WSJ) Rep. Alexandria Ocasio-Cortez (D., N.Y.) endorsed Vice President Kamala Harris for president. "Kamala Harris will be the next President of the United States," she said Sunday ...

(Aaron Schwartz/Zuma Press) Former President Bill Clinton and former Secretary of State Hillary Clinton--herself the Democratic nominee in 2016--endorsed Vice President Kamala Harris for president.