Sen. Lindsey Graham (R-SC) said on Sunday Morning Features that his committee will call the whistleblower behind impeachment after the trial.

From HuffPost:

“The Senate Intel Committee under [Sen.] Richard Burr (R-N.C.) has told us that we will call the whistleblower. Why is it important? I want to find out how all this crap started.”

Graham also said:

“I want to understand how all this crap started,” he added.

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“If the whistleblower is a former employee of — associate of Joe Biden, I think that would be important. If the whistleblower was working with people on Schiff’s staff that wanted to take Trump down a year-and-a-half ago, I think that would be important. If the Schiff staff people helped write the complaint, that would be important. We’re going to get to the bottom of all of this to make sure this never happens again,” Graham said.

Graham, who is the chairman of the Senate Judiciary Committee and does not reside on the chamber’s Intelligence Committee, also described two other investigations that will be taken up by GOP-led panels in the Senate. He said the Foreign Relations Committee, of which he is also a member, will look into Biden’s alleged conflicts of interest, and the judiciary panel will “deal with all things FISA.”

“Let me tell Republicans out there. You should expect us to do this. If we don’t do it, we’re letting you down. I guarantee you: if it shoe were on the other foot, Democrats would be eating us alive if Republicans had done any of these things,” he said.