The White House has been rocked by turnover and anxiety over the midterms. The president, who is tightening his inner circle, has lashed out at critics, held meandering rallies and feasted on a diet of news clips and “A.I. slop,” as one aide put it.

© Doug Mills/The New York Times

The Justice Department has opened an inquiry into Mr. Lewandowski. President Trump has not jumped to his defense.

© Haiyun Jiang for The New York Times