Sen. Lindsey Graham Lindsey Olin GrahamSteele Dossier sub-source was subject of FBI counterintelligence probe Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Key Democrat opposes GOP Section 230 subpoena for Facebook, Twitter, Google MORE (R-S.C.) on Sunday said President Trump could be the first commander in chief “to go down” over ongoing chaos in his administration, including his Twitter habit.

“You may be the first president in history to go down because you can't stop inappropriately talking about an investigation that if you just were quiet, would clear you,” Graham said of Trump on CBS’s “Face the Nation.”

The senator said while Trump’s conversations with former FBI Director James Comey were inappropriate, they do not constitute obstruction of justice.

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Graham’s comments come hours after Trump tweeted that Comey was "cowardly" for leaking his written memos to the press.

“At the end of the day, he’s got a good agenda, but this gets in the way of it,” Graham added of Trump on CBS.

Graham said that the president could reform the immigration system and pursue his agenda if the chaos subsided.