Mr. Kelly, the new chief of staff and a retired Marine general, is seeking to calm the chaotic churn around the president but not to directly control his behavior.
President Trump’s speech on Wednesday in Reno, Nev., was a day-and-night contrast to his performance on Tuesday in Phoenix, where he ignored his prepared remarks.
President Trump at a campaign-style rally in Phoenix promised he would shut down the government if Congress does not fund a wall on the southern border.
In freewheeling remarks, President Trump abandoned a theme of national unity to focus on the news media that he said “are trying to take away our history and our heritage.”