Former FBI Director James Comey is scheduled to testify before the Senate Intelligence Committee in an open session on Thursday morning at 10 a.m. ET.

The highly anticipated testimony comes after Comey was abruptly fired by President Donald Trump on May 9.

Comey is expected to answer questions about his relationship with Trump and the FBI's investigation into possible collusion between the Trump campaign and Russia.

On "America's Newsroom" today, legal expert Jay Sekulow said it's "troubling" that Comey is testifying at all.

He explained that special counsel Robert Mueller is conducting an independent investigation into the Trump campaign and Russia, so he finds it unusual that Mueller would allow a key witness like Comey to be examined by a Senate committee.

"And James Comey, let's face it, is not exactly the most credible witness," Sekulow added. "This is a guy that had to correct his testimony before the United States House and Senate on three separate occasions. ... He's not a credible witness, and he's discussing his testimony with the special counsel."

He said this suggests that "not much" will emerge from Comey's testimony on Thursday.

As for Comey's memo that Trump asked him to back off in the investigation into former National Security Advisor Michael Flynn's ties to Russia, Sekulow said it's a "big bag of nothing."

"That doesn't rise to the high level of obstruction of justice," Sekulow explained. "If James Comey really thought there was obstruction case to be made ... he had an obligation to report that to the Department of Justice. He didn't do it. That's it. Case is closed right there."

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