WASHINGTON, DC - JUNE 21: Special counsel Robert Mueller (2nd L) leaves after a closed meeting with members of the Senate Judiciary Committee June 21, 2017 at the Capitol in Washington, DC. The committee meets with Mueller to discuss the firing of former FBI Director James Comey. (Photo by Alex Wong/Getty Images)
Lindsey Graham vows to protect Robert Mueller
State of the Union
Sen. Lindsey Graham gave a stern warning Sunday to President Donald Trump against firing special counsel Robert Mueller.
01:42 - Source: CNN
Robert Mueller's investigation 16 videos
WASHINGTON, DC - JUNE 21: Special counsel Robert Mueller (2nd L) leaves after a closed meeting with members of the Senate Judiciary Committee June 21, 2017 at the Capitol in Washington, DC. The committee meets with Mueller to discuss the firing of former FBI Director James Comey. (Photo by Alex Wong/Getty Images)
Lindsey Graham vows to protect Robert Mueller
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WASHINGTON D.C - SEPTEMBER 27: Judge Brett Kavanaugh testifies to the Senate Judiciary Committee during his Supreme Court confirmation hearing in the Dirksen Senate Office Building on Capitol Hill September 27, 2018 in Washington, DC. Kavanaugh was called back to testify about claims by Christine Blasey Ford, who has accused him of sexually assaulting her during a party in 1982 when they were high school students in suburban Maryland. (Photo by Jim Bourg-Pool/Getty Images)
Was Kavanaugh picked to block Mueller probe?
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Trump lawyers quietly driving talks with Mueller
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Rod Rosenstein, deputy attorney general, listens during a Senate Judiciary Committee confirmation hearing for Brett Kavanaugh, U.S. Supreme Court associate justice nominee for U.S. President Donald Trump, not pictured, in Washington, D.C., U.S., on Tuesday, Sept. 4, 2018. If confirmed, Kavanaugh would fortify the high court's conservative majority, and spotlight the rightward march of the federal judiciary under Trump and the GOP-controlled Senate. Photographer: Andrew Harrer/Bloomberg via Getty Images
The man who oversees Mueller's investigation
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Michael Cohen, President Donald Trumps personal lawyer walks down Park Avenue in New York June 15, 2018 after leaving his hotel. - President Donald Trump's personal attorney Michael Cohen has indicated that he is willing to cooperate with federal investigators to alleviate the pressure on himself and his family. (Photo by TIMOTHY A. CLARY / AFP) (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
ABC: Cohen has done interviews with Mueller
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U.S. Deputy Attorney General Rod Rosenstein delivers remarks on "Justice Department Views on Corporate Accountability" during the The Annual Conference for Compliance and Risk Professionals at the Mayflower Hotel May 21, 2018 in Washington, DC. (Chip Somodevilla/Getty Images)
Rosenstein: 12 Russians charged with hacking
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Trump: I believe Manafort will tell the truth at plea deal
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Sekulow: NBC edited Trump interview on Comey
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Starr: Mueller is getting closer to the truth
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