According to the Post, an excerpt from Unhinged also claims that Lara Trump, the President's daughter-in-law, and adviser offered Omarosa a job after she was sacked from The White House.
Manigault Newman, who got her big break as a contender on Trump's canceled TV show, The Apprentice, has, in the words of the NY magazine's Jonathan Chait "met a wall of skepticism bordering on reflexive disbelief".
Trump was responding to a question from New York Times reporter Maggie Haberman about Manigault Newman's tell-all memoir that was announced this week.
Elsewhere in her book, she claims the president suffers from "mental decline" and alleges she once saw Trump chew up a piece of paper after a meeting with his then-lawyer Michael Cohen.
Publisher Gallery Books said "Unhinged: An Insider's Account of the Trump White House" will recount Newman's role in Trump's political rise, from her campaign trail focus on reaching out to African-American voters to her role in White House communications.
This is just one of a list of claims made by Omarosa Manigault Newman in a book lifting the lid on her former boss that threatens to reduce what's left of Trump's reputation to tatters - and could even destroy his presidency.
"It's sad that a disgruntled former White House employee is trying to profit off these false attacks", she said.
And Sanders is correct - both Manigault Newman and Trump once had a close relationship after she became a star contestant and popular villain on his hit reality TV show, "The Apprentice".
Manigault Newman worked in the White House for almost a year as an assistant to the president and the director of communications for the Office of Public Liaison.