In particular, the FBI assured the FISA court on numerous occasions — in the October 2016 warrant application and in subsequent renewals — that other sources, including a Yahoo News article, independently corroborated Steele’s claims, without evidence to back it up. It later emerged that Steele was also the source of the Yahoo News article, written by reporter Michael Isikoff.

The FBI also quoted directly from a disputed Washington Post opinion piece to argue that Trump’s views on providing lethal arms to Ukraine, and working toward better relations with Russia, was a possible indicator that the campaign had been compromised.

Trump’s policy on Ukraine weapons at the time mirrored then-President Obama’s policy, and the FBI did not present an independent assessment of the accuracy of the Post piece in its warrant application.

FOX NEWS EXCLUSIVE: INTERNAL FBI TEXTS SHOW DOJ WARNED FBI ABOUT BIAS IN KEY FISA SOURCE

Still, Schiff and Hoyer were joined by other Democrats who pushed back against Barr’s comments.

House Judiciary Committee Chairman Jerry Nadler, D-N.Y., for example, told Fox News that Barr’s vow to probe the FBI’s 2016 counterintelligence probe amounted to nothing more than “Republican conspiracy theory nonsense.”

He also characterized Barr’s statements as an “effort to divert attention” from Special Counsel Robert Mueller’s full report, which Barr said will be released within a week. Mueller’s investigation ended last month without securing the indictment of a single American for collusion with Russia or obstruction of justice, “despite multiple offers from Russian-affiliated individuals to assist the Trump campaign.”

In a tweet late Wednesday, Trump personal lawyer Rudy Giuliani condemned Nadler’s “diarrhea of the mouth,” and referenced a report last year that Nadler was overheard on a train discussing his plans to impeach the president.

“His lack of judiciousness was evident when he was overheard on Amtrak prematurely planning impeachment,” Giuliani wrote.

House Judiciary Committee Chairman Rep. Jerrold Nadler D-NY, speaks during a House Judiciary Committee debate to subpoena Acting Attorney General Matthew Whitaker, on Capitol Hill in Washington, Thursday, Feb. 7, 2019. (AP Photo/Jose Luis Magana)

House Judiciary Committee Chairman Rep. Jerrold Nadler D-NY, speaks during a House Judiciary Committee debate to subpoena Acting Attorney General Matthew Whitaker, on Capitol Hill in Washington, Thursday, Feb. 7, 2019. (AP Photo/Jose Luis Magana)


Halper, an American professor who reportedly is deeply connected with British and American intelligence agencies, has been widely reported as a confidential source for the FBI during the bureau’s original investigation into Russian meddling in the 2016 election. That official counterintelligence operation was opened by then-senior agent Peter Strzok, who has since been fired from the bureau.

During the 2016 campaign, Halper contacted several members of the Trump campaign, including Page and former foreign policy adviser George Papadopoulos.

“It was an illegal investigation. … Everything about it was crooked,” Trump told reporters on Wednesday, describing it as an attempted “coup” and reiterating his interest in digging into the probe’s origins. “There is a hunger for that to happen.”

Also on Tuesday, Fox News reported that a source said Barr had assembled a “team” to investigate the origins of the bureau’s counterintelligence investigation into the Trump campaign.

On Wednesday, Barr testified that he hasn’t technically “set up a team” but has colleagues helping him as he reviews the case.

“I think spying did occur.”

— Attorney General Bill Barr

“This is not launching an investigation of the FBI,” he stressed. “Frankly, to the extent there were issues at the FBI, I do not view it as a problem of the FBI. I think it was probably a failure of the group of leaders—the upper echelons of the FBI. I think the FBI is an outstanding organization and I am very pleased Director Chris Wray is there.”

He added, “If it becomes necessary to look over former officials, I expect to rely on Chris and work with him. I have an obligation to make sure government power is not abused and I think that’s one of the principal roles of the attorney general.”

The FBI’s 2016 counterintelligence investigation, formally opened by Strzok, began with a “paucity” of evidence, according to former FBI counsel Lisa Page, with whom Strzok was romantically involved.

During a closed-door congressional interview, Page admitted that the FBI “knew so little” about whether allegations against the Trump campaign were “true or not true” at the time they opened the probe, adding that they had just “a paucity of evidence because we [were] just starting down the path” of vetting allegations.

Former FBI Director James Comey would testify later that when the agency initiated its counterintelligence probe into possible collusion between Trump campaign officials and the Russian government, investigators “didn’t know whether we had anything” and that “in fact, when I was fired as director [in May 2017], I still didn’t know whether there was anything to it.”

Fox News’ Chad Pergram contributed to this report.