"He wasn't doing a good job, very simply".
The two met after Trump's meeting with Russia's foreign minister, Sergei Lavrov.
The removal of Mr Comey, who was leading an inquiry into alleged ties between the Trump campaign and Russian Federation, sent shockwaves through Washington.
"I am troubled by the timing and reasoning of Director Comey's termination", Burr said in a statement Tuesday. It's acknowledging that Comey's time had run out. "I think there will be a concerted effort to respond over time in kind".
The worry now, by some Republicans in Congress as well as Democrats, is whether a Justice Department headed by Attorney General Jeff Sessions, who concurred in Comey's firing despite saying he would recuse himself from the both the Russian Federation meddling and Clinton email matters, can be trusted to continue this investigation.
Mr Warner, along with many of his Democratic colleagues, has called for a special counsel in the Russian Federation probe. But Ben-Veniste, whose continued investigation of the Watergate coverup after Cox's firing helped lead to Nixon's resignation, highlighted not the firing itself, but the public outrage that followed.
James Comey was appointed director of the Federal Bureau of Investigation by President Barack Obama.
Republican leadership, including Senate Majority Leader Mitch McConnell, said a special prosecutor is not needed.
Trump's firing of Comey, moreover, displays his petulance, his impetuousness, and indeed his nervousness about the trajectory of his presidency.
Although Comey didn't mention Trump or any of the investigations by name, he dropped enough hints in his letter to make reading between the lines a cinch.
Vice President Mike Pence on Wednesday emphasized that the recommendation to fire Comey came from the deputy attorney general and said Trump acted with leadership and in "the best interest of the American people", a message that echoed among other members of Trump's campaign.
The economist also took issue with Republicans defending Trump.
The New York Times, Washington Post and Associated Press have all said that those with knowledge of the request confirmed that Comey had asked Deputy Attorney General Rod Rosenstein for more resources last week. Sessions said the actual number was much smaller and that Comey, who had counsel with him at the congressional hearing, should have corrected himself immediately, rather than waiting a day.
"I have now made a decision to recuse myself from any existing or future investigations of any matter relating in any way to the campaigns for President of the United States", Sessions said back in March.