Liz Cheney says Trump engaged in the 'most serious misconduct of any president in the history' and is unfit for further office

An image of former President Donald Trump (L) and Rep. Liz Cheney (R). Scott J. Applewhite/AP; Brandon Bell/Getty Images

• Rep. Liz Cheney said the House January 6 panel hasn't decided on criminal charges against Trump. 
• Cheney told CNN on Sunday that Trump engaged in the "most serious misconduct" of any US President. 
• She told the network that Trump's not fit to be president again. 

GOP Rep. Liz Cheney said former President Donald Trump violated the oath of his office and is not fit to be in the executive office again. 

"I think that Donald Trump, the violation of his oath of office, the violation of the Constitution that he engaged in, is the most serious misconduct of any president in the history of our nation. I think that, as I said, the committee has not decided yet whether or not we'll make criminal referrals," Cheney told CNN's Jake Tapper on Sunday. 

She added: "That's something we take very seriously. And I would also say that the Department of Justice certainly is very focused based on what we see publicly on what is the largest criminal investigation in American history. But there's no doubt in my mind that the President of the United States is unfit for further office."

Cheney, who is one of two Republicans on the committee investigating the January 6 riot and Trump's involvement in the insurrection, has been outspoken that Trump's actions amount to dereliction of duty. 

Trump has previously said that he's made up his mind about running for president in 2024, but has not yet formally announced his bid. 

On Sunday, Cheney told Tapper that any man or woman who would conduct themselves the way Trump did in "attempting to overturn an election" and stay in power "must never again be anywhere close to the Oval office."