Sen. Mark Warner Mark Robert WarnerIntelligence chief says Congress will get some in-person election security briefings Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House approves bill to secure internet-connected federal devices against cyber threats MORE (D-Va.), the top Democrat on the Senate Intelligence Committee, said Sunday that the committee has "made a number of referrals" to special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE.

“If you lie to Congress, we’re going to go after you. We’re going to make sure that gets referred. And we’ve made a number of referrals," Warner said on CBS's "Face the Nation."

.@MarkWarner says the Senate Intel Committee has sent "a number of referrals" to Mueller’s office. pic.twitter.com/NqvRdeHWiC — Face The Nation (@FaceTheNation) December 2, 2018

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Warner was responding to a question regarding last's week guilty plea from President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's former personal attorney, Michael Cohen.

Cohen on Thursday pleaded guilty to lying to Congress about negotiations between the Trump Organization and Russia to build a Trump Tower in Moscow.

Cohen said in his guilty plea that those negotiations continued into Trump's campaign for the presidency in 2016 after previously telling Congress that the talks were cut off before the Iowa caucuses.

Warner would not reveal Sunday who in particular the Senate Intelligence Committee has referred to Mueller. The committee has investigated, separate from the special counsel investigation, Russian interference in the 2016 election.

But Warner added that the committee wants to "make clear" that it's a crime to lie to Congress.

“I’m not going to go into which individuals have been referred," Warner said. "If we’ve seen something where we feel that it would be appropriate to go to the special prosecutor … we’ll make those referrals. And we want to make clear that lying to Congress is a crime.”