Manigault-Newman had a brief but chaotic tenure at the White House, leading to questions about the credibility of the claims she makes in her book.
Manigault Newman, who served as director of communications for the White House office of public liason, writes that at the time of her departure she had come to a "growing realisation that Donald Trump was indeed a racist, a bigot and a misogynist".
In leaked excerpts of Omarosa's new book published by the Guardian, she claims that Trump once exploded when he saw a report about George Conway criticizing his administration.
The former White House adviser Omarosa Manigault is said to have suggested President Donald Trump has used racial slurs against African-Americans and Filipinos.
Omarosa's self-interest and credibility issues are an asterisk lingering over her account of her role as a Trump aide, and as Washington Post points out, the book is littered "unverified accusations". "It must have been something very, very sensitive", she wrote, according to the Post.
"I didn't want to believe it", she writes.
John Barnes gives Premier League title and top four prediction
Jurgen Klopp has already insisted that Manchester City are by far favourites to win the Premier League again this season. Chelsea and Arsenal are in a transitional period with Maurizio Sarri and Unai Emery taking over this summer.
In the tome, "Under Fire", the veteran journalist - who had been pals with Omarosa since the latter worked for Al Gore in the '90s - says that Omarosa texted her after she got engaged to John Allen Newman, saying, "I said yes to him!"
Said Sanders: "It's sad that a disgruntled former White House employee is trying to profit off these false attacks, and even worse that the media would now give her a platform, after not taking her seriously when she had only positive things to say about the President during her time in the administration".
Other unverified details from Omarosa's book include Trump installing a tanning bed in the White House and her walking in on a meeting between the president and his since estranged consigliere Michael Cohen that ended with Trump chewing and swallowing a piece of paper.
'Using the N-word was not just the way he talks but, more disturbing, it was how he thought of me and African Americans as a whole'.
"Would you look at this George Conway article?" she claims to have heard Trump say.
White House aides "laughed at the assertion and said it was not true", The Post reported.
Newman claims she was sacked after coming close to get her hands on the tape said to contain the racist slurs, which Apprentice producers have refused to release for contractual reasons.