Senators to push Sessions for details during Tuesday hearing

CAPITOL HILL -- Attorney General Jeff Sessions will testify to Senate Intelligence Committee on Tuesday morning -- in a sequel to last week's appearance by the fired FBI Director James Comey.

The last time Sessions testified was his confirmation hearing in January.

"I didn't have-- did not have communications with the Russians," he said.

Since then, Sessions has acknowledged meeting with Russia's ambassador to the U.S., Sergey Kislyak, in 2016.

"Two meetings, one very brief after a speech," Sessions said.

He also recused himself from his own agency's Russia probe.

"I should not be involved investigating a campaign I had a role in," he said.

But the former FBI director suggested last week that there might be more to it than that.

"We also were aware of facts that I can't discuss in an open setting that would make his continued engagement in a Russia-related investigation problematic," Comey said.

Senators on the Intelligence Committee will push Sessions for details Tuesday.

Sen. Angus King from Maine outlined another other key question during an interview on Monday's "CBS This Morning."

"What role did he play, if any, again in the Comey firing?" King said. "Because at that point he was supposed to be recused from this investigation -- have nothing to do with it -- and to the extent the Comey firing had something to do with the investigation, I think that's something we need to explore."

Sessions may also get asked if Mr. Trump really does have a recording system in the Oval Office -- as Mr. Trump suggested in a tweet last month but refused to confirm again on Monday.

White House Press Secretary Sean Spicer was no more forthcoming during a press briefing.

"When he's ready to further discuss it, he will," he said.

Meanwhile, the Secret Service discussed it Monday afternoon, revealing that there are no recording devices installed in the Oval Office. The press secretary wouldn't comment on that new information, saying only that Mr. Trump will weigh in at some point in the future.

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    Nancy Cordes is CBS News' congressional correspondent.