“Since Donald is fully aware of however she acquired her permanent citizenship, he could, if there were anything fishy around it, expose the methods and somehow invalidate it,” wrote Manigault Newman. “He is a vindictive man, and I would not put anything past him.”

Melania Trump gained residency to the United States with an Einstein (EB-1) visa. In her book, Manigault Newman said “Trumpworld intimates” often questioned how Melania, a former model, was able to obtain a visa that was reserved for people with “extraordinary ability.” Manigault Newman said there were rumblings that Donald Trump pulled strings to “secure or expedite” the visa for his future wife, according to People.

“If Melania were to try to pull the ultimate humiliation and leave him while he’s in office, he would find a way to punish her,” Manigault Newman wrote. “This is a man who has said he could pardon himself from the Mueller investigation. Why not pardon himself over an alleged visa payoff?”