“Kamala Harris is implying she is descended from American Black Slaves,” Ali Alexander, a member of a right-wing constellation of media personalities, wrote on Twitter. “She’s not. She comes from Jamaican Slave Owners. That’s fine. She’s not an American Black. Period.”
Mr. Trump, a valuable Republican surrogate as his father faces a bruising 2020 race, posted the tweet of unverified information, then asked his more than three million followers: “Is this true? Wow.” By the end of the night, Mr. Trump had deleted his message, and by Friday, a spokesman said it had all been a misunderstanding.