Rep. Mo Brooks greets supporters while campaigning during a

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Rep. Mo Brooks greets supporters while campaigning during a "Save America" rally at York Family Farms on Aug. 21, 2021, in Cullman, Ala. / Getty Images

Updated May 2, 2022 at 9:36 PM ET

House Republican Reps. Mo Brooks of Alabama, Andy Biggs of Arizona, and Ronny Jackson of Texas on Monday rejected requests from the House select Jan. 6 committee to testify voluntarily regarding the attack on the Capitol.

All three members slammed the panel itself, calling it illegitimate or characterizing the probe as a "witch hunt."

Brooks, who had shared details of a pressure campaign by former President Trump after Trump withdrew his endorsement for Brooks' Senate campaign, said the moment had passed for his cooperation.

"At one time I would have voluntarily testified before the Nancy Pelosi Witch Hunt Committee provided the testimony was in public, the questioners were Congressmen, and the questions were limited to events related to January 6. But that time has long passed," Brooks said in a statement. "I wouldn't help (House Speaker) Nancy Pelosi and (Jan. 6 Vice Chair) Liz Cheney cross the street — I'm definitely not going to help them and their partisan Witch Hunt Committee."

Brooks said he has already given several sworn affidavits and public statements about Jan. 6 and the panel will have to issue a subpoena so close to the election to force him to testify, but that he would fight one.

Jackson rejected questions asking if he knew about text messages between members of the far right Oath Keepers group about his security.

"I do not know, nor did I have contact with, those who exchanged text messages about me on January 6. In fact, I was proud to help defend the House Floor from those who posed a threat to my colleagues," Jackson said in a statement.

In a series of tweets, Biggs slammed the two Republicans who sit on the panel, Cheney and outgoing Illinois Rep. Adam Kinzinger.

The new requests followed revelations by the members themselves, as in Brooks' case, and texts uncovered in a criminal probe or texts to Trump's Chief of Staff Mark Meadows, who turned over thousands of his personal messages to the panel late last year.

"The Select Committee has learned that several of our colleagues have information relevant to our investigation into the facts, circumstances, and causes of January 6th," Committee Chairman Bennie Thompson, D-Miss., and Cheney said in a joint statement.

They called cooperation a "patriotic duty" and urged Brooks, Biggs and Jackson to join the long list of witnesses who have testified. So far, the panel has interviewed more than 930 individuals.

Brooks recently drawn interest after Trump withdrew his endorsement in his Republican Senate primary. In March, Brooks issued a statement that Trump pressured him to overturn the presidential election, remove President Biden from office and force a special new election.

"The exchange you have disclosed with the former President is directly relevant to the subject of our inquiry, and it appears to provide additional evidence of President Trump's intent to restore himself to power through unlawful means," the panel said in the letter to Brooks.

Rep. Andy Biggs speaks on Title 42 at a news conference outside the U.S. Capitol on April 5, 2022, in Washington.

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Rep. Andy Biggs speaks on Title 42 at a news conference outside the U.S. Capitol on April 5, 2022, in Washington. / Getty Images

Along with looking into how Biggs was tied to planning for the Jan. 6 rally and how he worked to overturn the presidential election's results, the committee is raising questions about his interest in a presidential pardon related to the siege.

"We would like to understand all the details of a request for a pardon, more specific reasons why a pardon was sought, and the scope of the proposed pardon," it said in the letter to Biggs.

For Jackson, the committee is investigating text messages exchanged among members of the far-right extremist group Oath Keepers and their leader Stewart Rhodes that discussed providing protection during the riot for him and for "critical data" he supposedly possessed.

"Why would these individuals have an interest in your specific location? Why would they believe you 'have critical data to protect?' Why would they direct their members to protect your personal safety? With whom did you speak by cell phone that day?" were among the questions in the letter to Jackson.

Rep. Ronny Jackson wears a protective mask while walking through the Cannon Tunnel to the U.S. Capitol on Jan. 12, 2021, days after a violent mob broke through police barriers trying to overturn the presidential election.

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Rep. Ronny Jackson wears a protective mask while walking through the Cannon Tunnel to the U.S. Capitol on Jan. 12, 2021, days after a violent mob broke through police barriers trying to overturn the presidential election. / Getty Images

The committee's previous appeals for other Republican lawmakers to appear — House GOP Leader Kevin McCarthy, Pennsylvania Rep. Scott Perry, and Ohio Rep. Jim Jordan — were all declined.

McCarthy said in January the panel's objective was to damage its political opponents.

"And now it wants to interview me about public statements that have been shared with the world, and private conversations not remotely related to the violence that unfolded at the Capitol. I have nothing else to add," he said.

But a spate of those private conversations did indeed become public recently, tied to a book by two New York Times reporters. In three different conversations after the attack, McCarthy was heard saying he wanted to urge Trump to resign, that Trump admitted responsibility for Jan. 6 and that he feared that members of his caucus were fueling dangerous rhetoric.

Those conversations are of interest to the panel. For example, in its Jan. 22 letter, the committee wanted to talk to McCarthy about his remarks on the House floor days after the attack when he said Trump "bears responsibility."

As for Jordan, the panel has said it wants to learn more about his contact with Trump directly and his legal team ahead of the siege. The committee also wanted to talk to Perry about his involvement in help install former Department of Justice official Jeffrey Clark as acting U.S. attorney general.

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