Watch: Former FBI Director James Comey Testifies Before Congress

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Update (1110ET): Hot takes and liveblogs

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Former FBI Director James Comey is testifying in a long-awaited appearance before the Senate Judiciary Committee on Wednesday, where he is expected to answer questions regarding the FBI's conduct during the Trump-Russia investigation.

Committee Chairman Lindsey Graham (R-SC) has vowed to get to the bottom of inaccuracies and omissions used to obtain warrants to spy on the Trump campaign during the 2016 US election - as well as the the agency's reliance on the debunked Steele dossier when the FBI knew it was dubious.

Graham has speculated that the lower-level FBI employees who conducted the interview with the sub-source were not the only ones who knew that the sub-source said the information in the dossier was unreliable.

“We’re not going to let the system blame some low-level intel analyst or case agent for defrauding the court,” Graham told Fox News in June. “I believe it goes to the very top, and I’m going to get to the bottom of it and that means Sally Yates and [Rod] Rosenstein, and [Andrew] McCabe and Comey are all going to come before the committee and they’re going to be asked, ‘What did you know and when did you know it?’” -Fox News

Let's see if Graham is more bite than bark today...