Actually, throughout my life, my two greatest assets have been mental stability and being, like, really smart. "Too bad!" Trump wrote on Twitter.
President Donald Trump speaks during a meeting with Republican senators about immigration on Thursday, Jan. 4, 2018.More news: Razer's 'Project Linda' turns your phone into a gorgeous laptop
More news: Manhunt on for suspect in killing of Washington state deputy
More news: Sachin Tendulkar's Daughter Reportedly Harassed
Though this was the first time Trump responded to the mental fitness question, he, the White House, and the GOP have already been attacking the book.
In his interview with the BBC, Wolff was asked if he believed that Bannon felt Trump was unfit to serve as president and would try to bring him down. The president's press secretary, Sarah Huckabee Sanders, ripped Wolff's depiction of an off-the-rails presidency as "full of lies". I never spoke to him for book. Suddenly everywhere people are going, "Oh my God, it's true, he has no clothes". "But it certainly wasn't off the record", Wolff said on NBC on Friday morning.
While several analysts, as well as Trump allies, questioned the veracity of some of Mr Wolff's claims, the controversy has increased pressure on Trump, particularly in relation to comments attributed to Mr Bannon about the investigation into ties between his presidential campaign and Russian Federation.