Former FBI Director James Comey will testify before the Senate Intelligence Committee next week and is expected to say that President Trump asked him to back off the investigation into Mike Flynn.

Sen. Lindsey Graham (R-SC) said this morning that he worries the public hearing, scheduled for next Thursday, could turn into a "hit job" on the president. 

He said he believes Comey is "probably upset" about his firing by President Trump, noting that people around Comey have been leaking information to the press.

"Here's what I worry about: that he'll just focus on his conversations with the president and not answer any other questions because of the investigation. That would be a hit job on President Trump and I hope this hearing doesn't become a hit job on President Trump," said Graham on "America's Newsroom."

Graham said he wants to hear from Comey on whether the president himself is under investigation for possible collusion with Russia during the campaign. 

"I don't believe he is. There's a cloud over the presidency that needs to be removed if the facts justify it," he said.

Graham said a "one-sided" hearing would be the worst possible outcome for the country.

Comey was fired on May 9. One week later, the New York Times reported that according to a memo written by Comey, Trump had asked the then-FBI director to drop the investigation into Flynn.

The existence of the memo was subsequently confirmed by Fox News.

Watch the full interview above. 

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