Indications that President Trump plans to give his acting chief of staff the job are winning applause throughout the West Wing. One insider said that Mick Mulvaney, a former House member and budget chief, “was made for the job.”

Another said that after just a few weeks in the position, Mulvaney has calmed the West Wing, silenced harmful leaks, and brought a feeling of “teamwork” to the White House. “He’s a joy to work with,” said another top Trump aide. …