Manigault Newman, who came to fame on Trump's reality show "The Apprentice" years ago before going to work in his administration, is set to release her expose, "Unhinged", on August 14.
"Lowlife, she's a lowlife", Trump responded before exiting a platform where he had been asking the bikers for their thoughts on the media. In the book, she paints Trump as scattered, self-absorbed, misogynistic and insecure.
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.
Afterwards, Trump praised Manigault Newman on Twitter, saying: "Thank you Omarosa for your service!" "Yeah. The Art of the Deal is a bestseller!"
The Washington Post reports that a White House source confirmed that the former Apprentice contestant walked in on the meeting and that she was told off for it. It's the greatest business book of all time. Not only is this flat-out false (I've never heard such a thing), but Omarosa didn't even make an effort to call or email me to verify. "Just think how many copies I'd sell - maybe a commemorative inauguration copy?"
"Ultimately, the credibility of her accusations will rest primarily on what she can produce on audio tape", he writes.
Manigault Newman, 44, met Trump in 2004 when she was a candidate on the American version of The Apprentice, which he hosted.
"On this phone conversation, I was told exactly what Donald Trump said - yes, the N-word and others in a classic Trump-goes-nuclear rant - and when he'd said them". The White House in December announced that Newman had resigned and would be leaving her position in January.
The book also claims that Mr Trump behaves "like a dog off the leash" at events he attends without his wife, Melania.
Sanders says, "It's sad that a disgruntled former White House employee is trying to profit off these false attacks".