Rep. Eric Swalwell Eric Michael SwalwellSwalwell calls for creation of presidential crimes commission to investigate Trump when he leaves office 'This already exists': Democrats seize on potential Trump executive order on preexisting conditions Swalwell: Barr has taken Michael Cohen's job as Trump's fixer MORE (D-Calif.) on Monday said that President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE is just delaying the end of the special counsel investigation into Russian election meddling by refusing to testify.

"I think they're [Trump's legal team] actually a little defensive as people are starting to realize well Peter Strzok, he raised his right hand and went under oath. James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE, he raised his right hand and went under oath. People are going to start to ask 'well if they're so willing to answer questions for so long, why can't the president go talk to Bob Mueller, where he's actually already been given the questions,' " Swalwell said to Hill.TV's Krystal Ball on "Rising."

"People start to want the Mueller investigation to wrap up, as the Trump campaign says over and over, but the person who's stopping that is the person who's not answering the questions, that's the president," he continued.

Trump's personal attorney Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE said last month that he does not want the president to testify as a part of special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's investigation due to the revelation that the president dictated a letter about a 2016 meeting between his campaign aides and a Russian lawyer.

"This is the reason you don’t let the president testify," Giuliani said, adding that the revelation would create a problem in an FBI interview if "our recollection keeps changing, or we’re not even asked a question and somebody makes an assumption."

The president has often said that he would be willing to sit down with Mueller as apart of the probe and has continually called the probe a “hoax” and a “witch hunt” being used by Democrats to explain the loss in the 2016 presidential election.

— Julia Manchester