Trump no longer making eye contact with Gary Cohn

Mr. Kelly made a point, one staff member said, of throwing his arm around Mr. Cohn in solidarity, in full view of the news media, as they exited Marine One last week on the South Lawn.

But he has not always been successful. Several aides said Mr. Trump is freezing out Mr. Cohn by employing a familiar tactic: refusing to make eye contact with Mr. Cohn when his adviser greets him.

At a meeting on Thursday on infrastructure at the White House with Gov. Andrew M. Cuomo of New York and members of Congress from New York and New Jersey, Mr. Kelly told participants that Mr. Cohn would lead the meeting. But Mr. Trump, whose most cutting insult is to pretend someone does not exist or that he barely knows them, virtually ignored him.