Congressional hearings into the deadly U.S. Capitol attack by Donald Trump's supporters opened with the panel presenting a video showing that even the former president's daughter, Ivanka, did not believe his false claims of election fraud.

Even members of his own administration including Attorney General Bill Barr - as seen in video shown by the House of Representatives select committee - rejected Trump's claims of widespread election fraud in his loss to Democrat Joe Biden as untrue.

The hearing began with Barr's video testimony calling the fraud claims "bullsh*t," an argument that had convinced Trump's daughter. "I respect Attorney General Barr. So I accepted what he was saying," Ivanka Trump said in videotaped testimony.

The panel also showed videotaped testimony from other senior Trump White House officials including then-Vice President Mike Pence's chief of staff.

"Jan. 6 was the culmination of an attempted coup, a brazen attempt, as one writer put it shortly after Jan. 6, to overthrow the government," Democratic U.S. Representative Bennie Thompson, the committee's chairman, said in his opening statement. "The violence was no accident. It was Trump's last stand."

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