Washington (CNN)The top Democrat on the Senate Intelligence Committee rebutted President Donald Trump on Sunday, questioning his response to former national security adviser Michael Flynn's guilty plea and backing former FBI Director James Comey.
Warner: If Trump knew Flynn lied, why not act sooner?
"The President is somehow saying he fired Flynn because he knew Flynn was lying to (Vice President Mike) Pence," Virginia Democratic Sen. Mark Warner said. "Well if he knew that then, why didn't he act on it earlier?"
Warner, speaking Sunday on CNN's "State of the Union," was responding to Trump's tweet Saturday on Flynn's guilty plea, in which he suggested he was aware Flynn had lied to the FBI when he fired the former general.
"I had to fire General Flynn because he lied to the Vice President and the FBI," Trump tweeted. "He has pled guilty to those lies. It is a shame because his actions during the transition were lawful. There was nothing to hide!"
Warner anticipated that because Flynn was only charged with one crime, it was more likely that Flynn had more information to provide than what has already been made public.
"There's more to come," Warner said.
Flynn pleaded guilty Friday to lying to the FBI about conversations he had with Russia's ambassador to the United States during the transition.
Warner, in his interview Sunday, also responded to a tweet from Trump accusing Comey of lying before Congress.
"I believe FBI Director Comey," Warner said.
Comey, in testimony before the Senate Intelligence Committee, said Trump pressed him to end the investigation into Flynn. Trump continues to deny this, and on Sunday morning sent a tweet calling it a "Comey lie."