- Booker is among Democrats calling on the appointment of a special prosecutor in Russia investigation
- White House says Comey's firing has nothing to do with the ongoing investigation
"The fact that we have the President of the United States firing someone who has an active investigation on them erodes the public trust," Booker, of New Jersey, said Wednesday on CNN's "Erin Burnett OutFront."
"I've been one of those people with serious problems with Comey ... but this is very problematic," Booker said.
Booker's comments came one day after Trump -- acting on a letter from Deputy Attorney General Rod Rosenstein -- shocked Washington by firing Comey, the man responsible for the bureau's investigation to possible ties between Trump campaign associates and Russia.
White House officials -- including senior adviser Kellyanne Conway and deputy press secretary Sarah Huckabee Sanders -- have maintained that Trump's decision to let Comey go doesn't have anything to do with the current ongoing investigation into Russia's interference into the 2016 election.
Booker is not as certain.
"The mere fact that your question is being asked (that Russia may influence the presidency) ... highlights what I am calling for -- trust restored to presidency ... faith in our elections," he said. "We need to get to the bottom of what's going on. This is the kind of stuff that should have been for spy novels of the past not the reality (of today)."
He has joined the chorus of Democrats calling on the appointment of a special prosecutor to be appointed to lead the investigation in Comey's place. Attorney General Jeff Sessions, they believe, should not be involved, given that he recused himself after it emerged he failed to disclose meetings with a Russian ambassador to Washington.
"This is a Paul Revere moment," Booker said. "The Russians are coming, what are we going to do about it?"