And few things grate at Mr. Trump like the prospect of disloyalty. Close allies have switched on him in the past, including his former personal lawyer and fixer, Michael D. Cohen, whom Mr. Trump has identified a “rat.”Mr. Cohen, who pleaded guilty to federal charges associated with hush cash payments to 2 women who stated they had romantic affairs with Mr. Trump, is cooperating with the Manhattan district attorneys examination. After pleading guilty, Mr. Cohen said that it was Mr. Weisselberg who had actually helped the Trump Organization to disguise the reimbursements that Mr. Cohen got for settling one of the women.Mr. Weisselberg was not implicated of any misbehavior by federal prosecutors, and Mr. Trump did not pardon him in his final days in workplace, though he was said to have thought about doing so. (A pardon would not have actually given Mr. Weisselberg immunity from state charges.)After Mr. Cohen pleaded guilty in 2018, Mr. Trump expressed confidence that Mr. Weisselberg had not turned on him.”One hundred percent he didnt,” Mr. Trump told press reporters for Bloomberg. “Hes a wonderful guy.”Mr. Weisselberg is, in particular respects, the polar opposite of his longtime employer. Discreet and simple, the monetary chief has prevented attention even as he has brought his household into Mr. Trumps orbit. One of his sons, Barry, was the residential or commercial property manager of Trump Wollman Rink in Central Park. Another, Jack, works at Ladder Capital, among Mr. Trumps lenders.But Mr. Weisselberg has done his part to add to Mr. Trumps aura of wealth and power. In 2005, when The New York Times tried to determine how much money Mr. Trump had, Mr. Weisselberg supplied a list of properties that he said would show that Mr. Trump deserved $6 billion.When the list of properties appeared to include up to just $5 billion, Mr. Weisselberg excused himself.”Im going to go to my workplace and discover that other billion,” he said.