Mr. Trump’s attacks appeared to be directed at members of the “squad,” a group of liberal, first-term Democrats: Alexandria Ocasio-Cortez of New York, Ilhan Omar of Minnesota, Ayanna Pressley of Massachusetts and Rashida Tlaib of Michigan. Of the four, only Ms. Omar, who is from Somalia, was born outside the U.S.

Speaker Nancy Pelosi, who has been engaged in a war of words with the young lawmakers, defended them on Sunday, saying Mr. Trump’s campaign slogan, “Make America Great Again,” “has always been about making America white again.”

News analysis: Ahead of next year’s election, Mr. Trump “appears to be drawing a deep line between the white, native-born America of his memory and the ethnically diverse, increasingly foreign-born country he is presiding over,” our chief White House correspondent writes.

Tell us: Have you been told to “go back” to your country even though you’re an American? The Times wants to hear from you.