Sessions, an early Trump supporter, recused himself in March from oversight of the FBI's probe into possible cooperation between the Trump campaign and the Russians when his meetings with Kislyak became known.
But the committee put out a statement Monday saying the hearing is now set to begin at 2:30 p.m. ET on Tuesday in open session.
He did not say whether he would appear in open or closed session.
What was your involvement in the decision to fire James Comey? Media reports last week said Sessions offered to resign because of tensions with the president over his decision to recuse himself from the Federal Bureau of Investigation's Russian Federation probe.
According to Comey's testimony, the others in the room, all of whom were asked to leave before the Flynn conversation, included Vice President Mike Pence; Gina Haspel, the deputy director of the CIA; Nicholas J. Rasmussen, the director of the National Counterterrorism Center, and retired Marine Gen. John F. Kelly, now the secretary of Homeland Security.
The attorney general cited his involvement in Trump's campaign for stepping away from the Russian Federation investigation in March. And, finally, Comey raised some questions about why Sessions played a role in his firing last month if Sessions were truly hands-off on the Russian Federation probe. The Justice Department has denied that, saying Sessions stressed to Comey the need to be careful about following appropriate policies.
But officials said Sessions's relationship with Trump has been strained since the attorney general recused himself from the Russian Federation probe in March.
"Yes, yes, yes", she said when Axelrod asked about the matter. "That'll come up", he said on Fox.
Comey's remarks drew an angry response from the president on Friday accusing Comey of lying.
As for the timing of Sessions' recusal, Comey said the FBI expected the attorney general to take himself out of the matters under investigation weeks before he actually did.
Comey later told Sessions he didn't want to be alone with the president.
Schumer invited Trump to testify under oath before the Senate. The former Federal Bureau of Investigation director hinted in the committee's closed session that there may have been a third, unreported meeting between Sessions and Kislyak, people familiar with the briefing said. "The more he says, the more he risks being called out for inconsistencies".
On Monday, the White House did not rule out the possibility of Sessions invoking executive privilege at some point during his testimony.
Trump's lawyer, Jay Sekulow, said on ABC's "This Week", "The president said he is going to address the issue of the tapes, whether the tapes exist or not, next week". What did Russian Federation want to talk about?
The former Republican senator took over the Justice Department with a tough-on-crime agenda that included quashing illegal immigration, rooting out drug gangs and leading the charge in helping cities fight spikes in violence.
"I have a recollection of him just kind of looking at me", Comey testified.
"Mr. President, let's don't make a circus out of your presidency". Or does his appearance represent a White House-orchestrated counter attack following the damaging Comey testimony? "It will be the highest-rated TV show in the history of the world but it's not good for our democracy". Sessions is especially important to the case because as the attorney general, he was Comey's boss, and because Comey testified "the attorney general lingered by my chair, but the president thanked him and said he wanted to speak only with me".