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Special counsel Robert Mueller and his team of investigators reportedly could begin conducting interviews with current and former White House aides as early as this week.

As the probe into Russia's involvement in the 2016 election continues to unfold, some are saying that President Donald Trump should fire Mueller.

Judge Andrew Napolitano said on "Outnumbered" today that the president is the chief law enforcement officer of the land, so he has the power to fire Mueller.

He cautioned Trump against doing so, however, warning it would be "extremely unwise politically."

He explained that it would "accelerate greatly" impeachment efforts.

"And I hate to even raise that, but that's what will be raised by Republicans and Democrats," the judge said, pointing to an "antagonistic" statement from Sen. Lindsey Graham, who is sponsoring legislation that would give Mueller an added layer of job protection.

“I want the president to know that there is a process in place, and there are checks and balances long before you got here,” Graham said. “And they will be here long after you’re gone.”

“I just want everybody in America to know that he is going to do his job without fear of reprisal,” Graham said of Mueller.

Marie Harf said she doesn't believe Trump will end up firing Mueller, and she pointed out that Trump's firing of former FBI Director James Comey was what led to the appointment of a special counsel in the first place.

"I think it is a cautionary tale for the president if he is even thinking about firing Bob Mueller," Harf said.

Watch more above.

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