Steve Bannon was seen arriving in Congress for the hearing early Tuesday

Bannon to testify in Congress in wake of explosive book on Trump

"I authorized Zero access to White House (actually turned him down many times) for author of phony book! I never spoke to him for book. Full of lies, misrepresentations and sources that don`t exist," Trump tweeted.

Trump lashes out at bombshell book after failing to block release

"Fire and Fury: Inside the Trump White House" by author Michael Wolff set off a political firestorm with its portrayal of Trump as not particularly wanting to win the U.S. presidency in 2016 and unprepared for the job

Explosive book on Trump's White House to be released early after Trump's lawyers try to block it

The book 'Fire and Fury: Inside the Trump White House' written by Michael Wolff, claims that the ultimate goal of Trump was never to win

Trump did not want to be US president: Book