Watch: Krauthammer destroys Dem narrative that accuses Trump of 'witness intimidation' against Comey

After President Donald Trump fired FBI Director James Comey last month and subsequently boasted about "Comey tapes" on Twitter, some Democrats accused the president of "witness intimidation."

They said that Trump was publicly attempting to quell any possibility of Comey testifying against him by alleging that he had tapes of conversations between the two. Trump's implication was that he had something damaging on Comey and would release it if he needed.

But Trump put those rumors to bed on Thursday when he tweeted from his personal Twitter account that there are no "Comey tapes."

"With all of the recently reported electronic surveillance, intercepts, unmasking and illegal leaking of information, I have no idea whether there are 'tapes' or recordings of my conversations with James Comey, but I did not make, and do not have, any such recordings," Trump tweeted.

Still, Democrats continued their "witness intimidation" claims.

The ethics lawyer for former President Barack Obama's White House, Norm Eisen, said on Thursday that Trump's public admission that he doesn't possess any Comey recordings amounts to witness intimidation.

"This lie increases Trump's legal exposure for obstruction and witness intimidation--more evidence of corrupt intent," Eisen wrote on Twitter.

But political commentator Charles Krauthammer said on Fox News Friday that accusations from Democrats that Trump is trying to "intimidate" Comey is absolute "rubbish."

"The idea that this is intimidation of a witness is pure rubbish," Krauthammer said, before giving an example of what is witness intimidation and what isn't.

Krauthammer explained the witness intimidation accusations are just another ploy by Democrats and Trump's opponents to try and bring him down and defeat him in the court of public opinion, despite the fact that none of the accusations have solid ground to stand on.

"We're now at the tertiary level of accusations," he said. "You can't get anywhere on collusion. We have yet, in almost a year, to have any evidence of collusion. So they're on to obstruction. Obstruction is really kind of shaky. There isn't really that much there. So now you want to go on to intimidation of a witness."

"They're getting a bit desperate," Krauthammer added.

Krauthammer went on to predict that Democrats' accusations will go on for months or possibly even years.

"But it's getting more and more absurd — it's tail chasing," Krauthammer explained. "If the Democrats want to spend the next year, year-and-a-half in a rabbit hole, be our guest.