The White House has been lobbying aggressively to maintain the authority, against a bipartisan coalition of lawmakers - conservative Republicans and liberal Democrats - who say the act compromises civil liberties.
In the book, Bannon called the June 2016 Trump Tower meeting that Trump's son Donald Trump Jr., son-in-law Jared Kushner and campaign chairman at the time Paul Manafort had with Russian figures "treasonous" and "unpatriotic".
Mr Trump, although he had eventually supported Mr Moore's candidacy, later blamed Mr Bannon for the embarrassment.
"I feel betrayed because you're not supposed to do that", Trump told the Journal.
"Steve had nothing to do with my win, or certainly very little", he said. Trump and his minions have slammed him publicly and repeatedly, giving Bannon no practical reason to take one for the chief anymore.
President Trump said he would beat Oprah Winfrey in the 2020 presidential election
According to findings released Wednesday, only 19 percent of GOP voters said they had a favorable view of the former White House chief strategist, a 13-percent drop in favorability from a little less than a month prior, when 32 percent registered approval of him.
Mr Bannon could attempt to start a new venture without Mr Ailes or perhaps go back to making documentaries.
Bannon had previously insisted that he did not need a lawyer because he had not been drawn into the multiple investigations into whether Trump's team coordinated with Russian Federation during the 2016 campaign.
Another possible avenue for Mr Bannon already is closed. "Donald Trump, Jr.is both a patriot and a good man".
It was no wonder the Trump White House came off from the outside as a confused madhouse, with a president constantly getting mixed messages and making decisions as an ill-informed neophyte would-be politician.
Trump said "we'll see what happens" when asked if he'd provide an interview to Mueller's team.