Former U.S. President Donald Trump called the congressional investigation into the Capitol riots a "kangaroo court."
In a 12-page statement, he said the investigation was designed to distract Americans from the "disaster" of a Democrat-led government.
It came after the committee held two public hearings accusing Trump of attempting a coup to stay in power.
On Monday, the group detailed evidence of disagreement among Trump aides over whether to accept his electoral defeat.
Trump supporters stormed into Congress on Jan. 6, 2021, trying to prevent confirmation of Joe Biden's election victory. A separate ongoing criminal investigation led to more than 800 arrests in nearly every state.
"Seventeen months after the events of Jan. 6, Democrats cannot offer a solution," Trump, a Republican, said in a statement released via PCC Save America.
"They are desperately trying to change the perception of a failed nation without even mentioning the chaos and death caused by the radical left just a few months ago," he continued, referring to the riots that erupted during protests against racial justice in the United States.
Trump called the current president "the Biden of the basement." "Our country is in spades," he concluded, dismissing the congressional investigation as an excuse to prevent him from running for president again in 2024.
Earlier Monday, a House committee on the second day of a public hearing was shown videotaped testimony from former campaign manager Bill Stepien, who said aides split into two teams after the election.
He described the "normal team" of those who accepted the election results and the "Rudy team" who followed up on allegations of election fraud made by Trump's lawyer Rudy Giuliani.
"Make no mistake, they control the government. They own this disaster. They're hoping that these hearings will somehow change their failed prospects."
Trump accused the "unelected pseudo-committee" of treason, referring to the Democratic-led House special committee that investigated last year.
Both Mr. Stepien and another witness, former Trump adviser Jason Miller, testified that Mr. Giuliani appeared to be drunk the night before the election.
Mr. Miller said that even though the results were still pending, Mr. Giuliani suggested that Trump "go out and declare victory and say we won it unconditionally."
Through a spokesman Monday, Mr. Giuliani denied that he was drunk on election night, adding that he did not know why Mr. Miller "made such a false statement."
In videotaped testimony also shown at Monday's hearing, former Attorney General Bill Barr said he repeatedly told Mr. Trump that there was no basis for the allegations of tampering with voting machines or "dumping" ballots, which he called "crazy stuff."
But Mr. Trump refused to acknowledge those concerns and continued to spread claims of fraud, Mr. Barr said. He testified that he was "demoralized" by his boss's statements.
"I thought, 'Gee, if he really believes all this, he's lost touch with reality, if he really believes all this,'" he said.
The Jan. 6 Select Committee is trying to show that the former president's claims of election fraud led directly to the attack on the U.S. Capitol.
But the committee will not refer Trump or anyone else to the Justice Department for criminal prosecution, committee chairman Benny Thompson, a Mississippi Democrat, told reporters Monday.
"If the Justice Department looks at this and decides there's something that needs further consideration, I'm sure they will," he said when CNN reporters asked him about the chances of jail time for Trump or his entourage.
The committee's Republican vice chairwoman, Congresswoman Liz Cheney, contradicted Mr. Thompson, tweeting that the committee "has not issued an opinion on potential criminal cases."
"We will announce a decision on this at the appropriate time."
The committee plans to hold additional hearings Wednesday and Thursday later this week.
