Trump has hit back at the claims in the book, calling Wolff "a total loser" when he retweeted a parody cover of the book that the Republican Party had tweeted earlier Friday. In a series of tweets, Mr Trump denied ever speaking to Mr Wolff for the book and lashed out at his one-time adviser Steve Bannon, dubbing him "sloppy Steve".
Meanwhile, the RNC noted that Politico's Michael Calderone warned that there needs to be "a broader skepticism among journalists over the veracity of certain details" of Wolff's book.
In addition to the president's relatively empty public schedule, he officially broke ties with Steve Bannon over the Michael Wolff book.
He also dismissed claims Trump made overnight in a tweet that he never spoke to Wolff for the book. Some bookstores sold out in under 10 minutes because everybody wanted to know what was in this bombshell book and I'm sure that was Michael Wolff's plan from the very beginning. Wolff also writes that the president asked associates to help pursue an anti-Mueller campaign on his behalf.
One day after the author of a White House tell-all book said President Trump was "like a child", the commander-in-chief defended himself on Twitter by boasting that "mental stability" is one of his greatest strengths.
The explosive book mocks Trump's inability to read or consume information that is written. "The need for immediate gratification".
Wolff spent 18 months reporting on both the Trump campaign and the Trump White House.
The US President has threatened to sue, and has repeatedly criticised the book and its author on Twitter.
On the Russia investigation, Bannon is quoted in the book saying that Donald Trump Jr. and Jared Kushner were "treasonous" and "unpatriotic" when they met with a Russian lawyer who claimed to have dirt on Hillary Clinton in June 2016.
He said: "I absolutely spoke to the president". Trump lawyers tried, unsuccessfully, to threaten the book's publisher this week, and on Thursday, White House press secretary Sarah Huckabee Sanders called the suggestion that Trump is mentally unwell "disgraceful and laughable". "This is extraordinary, that the president of the United States would try to stop the publication of a book".
The tell-all diary outlines, among other things, Trump's sour relationship with ex-aide Steve Bannon.
"Many of the accounts of what has happened in the Trump White House are in conflict with one another; many, in Trumpian fashion, are baldly untrue", he writes.