"Just in the past few days, the counterintelligence red flags are flying a lot higher than they did, arguably, then, when this investigation was first launched" after the James Comey firing, Samantha Vinograd said.
"This is Vladimir Putin, who he was trying to do business with, who was helping him win the election," Jeffrey Toobin said.
Andrew McCabe in a "60 Minutes" interview described chaos in the top echelons of the FBI and Department of Justice after Trump took office.
"You are out of your mind if you don't think the FBI wanted to make a case if we could," Comey said. "The facts weren't there."
"It goes something like this, 'If you don't go easy on Flynn, I'll break your kneecaps," the lawyer and former New York City mayor said.
The president phoned a New York Times reporter after a meeting with the Russian leader at the 2017 G20 summit and said he accepted Putin's denial.
"Again, the president was ill served by poor advice," Christie wrote.
"You're abusing that individual, the president's rights. Not only that, it's obstruction of justice. Misuse of the legal process."
"The rank and file of the FBI are great people who are disgusted with what they are learning about Lyin' James Comey," the president tweeted.
"The only time the president is not shooting himself in the foot on the Russia investigation is when he's reloading the gun," Mike Rogers, a former GOP congressman, told CNN.
The FBI launched its investigation to determine whether President Donald Trump was "acting at the behest of [Russia] and somehow following directions, somehow executing their will," FBI counsel James Baker told Congress.
"Shame on Republicans who don't speak up at this moment — for the FBI, the rule of law, and the truth," Comey said.
"The only reason they think I did it is because they continually did it because they're a bunch of scumbag liars," the president's lawyer said.
"No Smocking Gun...No Collusion," the president tweeted.
"The most important lies told by Trump...they're all about Russia," Carl Bernstein said.
"I understand the Democrats have important debates now over who their candidate should be," the former FBI director said, "but they have to win. They have to win."
"On 245 occasions, former FBI Director James Comey told House investigators he didn't know, didn't recall, or couldn't remember things when asked. Opened investigations on 4 Americans (not 2) - didn't know who signed off and didn't know Christopher Steele. All lies!" the president wrote.
Trump blasted: "Leakin' James Comey must have set a record for who lied the most to Congress in one day."
Comey also revealed that he will appear again before the House Judiciary and Oversight and Government Reform Committees on December 17 to answer more questions.
"F.B.I. agents are experts at interviewing people and quickly dispatching leads to their colleagues around the world," Comey said.
Former FBI Director James Comey warned that even "small lies matter" after Supreme Court nominee Brett Kavanaugh's testimony before the Senate Judiciary Committee on Thursday.
President was apparently under the impression that private citizens can fire FBI directors.