Uh oh. Lindsey Graham is really not happy. NBC Nightly News?Verified account @NBCNightlyNews 2h2 hours ago Replying to @NBCNightlyNews Sen. Graham: "If Jeff Sessions is fired, there will be holy hell to pay." Sen. Graham: "Any effort to go after Mueller could be the beginning of the end of the Trump presidency, unless Mueller did something wrong." Sen. Graham on Pres. Trump's attacks against AG Sessions: "I think he should show some respect ... I hope it stops." Sen. Graham says will introduce legislation to require judicial review if a pres. wants to fire special counsel who is investigating a pres.