Former White House senior adviser Steve Bannon. Picture: REUTERS
Former White House senior adviser Steve Bannon. Picture: REUTERS

Washington/New York — Former White House strategist Steve Bannon has left his job as executive chairman of Breitbart News and will no longer host a radio show at SiriusXM after feuding with President Donald Trump over remarks in a new book.

The White House has pressured its allies to cut ties with Bannon after his remarks in the book Fire and Fury by Michael Wolff became public last week.

He lost the support of the Mercer family, Republican mega-donors and his closest financial patrons, after Trump spoke with Rebekah Mercer by phone.

Breitbart did not say whether Bannon was fired or quit.

"Steve was fighting to the very end" to hold onto his job, a Breitbart employee said, declining to be identified discussing a personnel matter.

SiriusXM said in a statement after Breitbart’s announcement that Bannon "will no longer host on SiriusXM" because "our programming agreement is with Breitbart News".

A person close to Bannon who also asked not to be identified said Bannon’s political involvement was interfering with Breitbart’s performance as a news organisation.

He chose continuing his political operation, the person said.

Bannon declined to comment.

Wolff’s book says Bannon labelled as "treasonous" Donald Trump Jr’s and Trump son-in-law Jared Kushner’s 2016 meeting with Russian nationals in which the president’s son expected to receive dirt on Democrat Hillary Clinton.

Wolff also reported that Bannon called Trump’s daughter Ivanka "dumb as a brick".

Bannon also predicted in the book that Robert Mueller, the special counsel investigating possible collusion between the Trump campaign and Russia, would "crack" Trump Jr "like an egg on national TV".

Bannon issued a statement on Sunday in which he did not specifically deny the comments or fully apologise for them. He said he regretted waiting to respond to what he called "inaccurate reporting" and called Donald Trump Jr an "honourable man".

Advertising boycott

Breitbart has also been the focus of an advertising boycott organised by a group known only by its Twitter account, Sleeping Giants.

The group describes itself as "a campaign to make bigotry and sexism less profitable" and has recently redoubled its effort to persuade advertisers to avoid the site, according to a person with first-hand knowledge of the site.

As a result, the site is largely dependent on outside money from supporters such as the Mercer family.

"Breitbart depends on private financing because they experienced this massive advertiser boycott," said Kurt Bardella, a former Breitbart spokesman.

Little is known about Breitbart’s finances or other investors. The Mercer family has invested $10m in the site, according to the New Yorker.

In a statement last week, Rebekah Mercer, a minority stakeholder in Breitbart, said her family had not communicated with Bannon "in many months" and provided "no financial support to his political agenda".

A person familiar with Breitbart said the advertising boycott had been a major hit to the organisation, and that Rebekah Mercer did not want to continue to fund it.

‘Sloppy Steve’

"I’m proud of what the Breitbart team has accomplished in so short a period of time in building out a world-class news platform," Bannon said, according to Breitbart.

Trump has minimised Bannon’s role in his 2016 election win, characterised him as self-interested and destructive, and nicknamed him "Sloppy Steve".

Trump has also denounced Wolff’s book as "fiction", as well as "really boring".

On Sunday he bemoaned a "Fake Book, written by a totally discredited author".

The website’s CEO, Larry Solov, said in Breitbart’s statement: "Steve is a valued part of our legacy, and we will always be grateful for his contributions, and what he has helped us to accomplish."