Last year, the president gave Attorney General Bill Barr authority to declassify any documents related to surveillance of the Trump campaign in 2016. Trump, at the time, also ordered members of the intelligence community to cooperate with Barr’s probe.

Allies of the president, including Republicans on Capitol Hill leading their own investigations into the origins of the Trump-Russia probe, have criticized officials like FBI Director Christopher Wray and CIA Director Gina Haspel, claiming that the directors have been blocking the release of documents.

The president’s tweets come after Director of National Intelligence John Ratcliffe declassified documents that revealed former CIA Director John Brennan briefed former President Obama on Hillary Clinton’s purported “plan” to tie then-candidate Donald Trump to Russia as “a means of distracting the public from her use of a private email server” ahead of the 2016 presidential election.

DNI DECLASSIFIES BRENNAN NOTES, CIA MEMO ON HILLARY CLINTON 'STIRRING UP' SCANDAL BETWEEN TRUMP, RUSSIA

Fox News first reported that Ratcliffe declassified Brennan’s handwritten notes – which were taken after he briefed Obama on the intelligence the CIA received – and a CIA memo, which revealed that officials referred the matter to the FBI for potential investigative action.

"Today, at the direction of President Trump, I declassified additional documents relevant to ongoing Congressional oversight and investigative activities," Ratcliffe said in a statement to Fox News Tuesday.

A source familiar with the documents explained that Brennan's handwritten notes were taken after briefing Obama on the matter.

“We’re getting additional insight into Russian activities from [REDACTED],” Brennan notes read. “CITE [summarizing] alleged approved by Hillary Clinton a proposal from one of her foreign policy advisers to vilify Donald Trump by stirring up a scandal claiming interference by the Russian security service,” Brennan’s notes read.

The notes state “on 28 of July." In the margin, Brennan writes "POTUS," but that section of the notes is redacted.

“Any evidence of collaboration between Trump campaign + Russia,” the notes read.

The remainder of the notes are redacted, except in the margins, which reads:  “JC,” “Denis,” and “Susan."

The notes don't spell out the full names but "JC" could be referring to then-FBI Director James Comey, "Susan" could refer to National Security Adviser Susan Rice, and "Denis" could refer to then-Obama chief of staff Denis McDonough.

The declassification comes after Ratcliffe, last week, shared newly-declassified information with the Senate Judiciary Committee which revealed that in September 2016, U.S. intelligence officials forwarded an investigative referral on Hillary Clinton purportedly approving “a plan concerning U.S. presidential candidate Donald Trump and Russian hackers hampering U.S. elections” in order to distract the public from her email scandal.

That referral was sent to Comey and then-Deputy Assistant Director of Counterintelligence Peter Strzok.

“The following information is provided for the exclusive use of your bureau for background investigative action or lead purposes as appropriate,” the CIA memo to Comey and Strzok stated.

"This memorandum contains sensitive information that could be source revealing. It should be handled with particular attention to compartmentation and need-to-know. To avoid the possible compromise of the source, any investigative action taken in response to the information below should be coordinated in advance with Chief Counterintelligence Mission Center, Legal,” the memo, which was sent to Comey and Strzok, read. “It may not be used in any legal proceeding—including FISA applications—without prior approval…”

“Per FBI verbal request, CIA provides the below examples of information the CROSSFIRE HURRICANE fusion cell has gleaned to date," the memo continued. "“An exchange [REDACTED] discussing US presidential candidate Hillary Clinton’s approval of a plan concerning US presidential candidate Donald Trump and Russian hackers hampering US elections as a means of distracting the public from her use of a private email server.”

The memo is heavily redacted.

Ratcliffe informed the committee last week that the Obama administration obtained Russian intelligence in July 2016 with allegations against Clinton, but cautioned that the intelligence community “does not know the accuracy of this allegation or the text to which the Russian intelligence analysis may reflect exaggeration or fabrication.”

According to Ratcliffe’s letter, the intelligence included the “alleged approval by Hillary Clinton on July 26, 2016, of a proposal from one of her foreign policy advisers to vilify Donald Trump by stirring up a scandal claiming interference by Russian security services.”

Nick Merrill, Clinton's spokesperson, called the allegations "baseless b———t” last week. A spokesman for Clinton did not immediately respond to Fox News’ request for comment on the declassified documents.

But Ratcliffe, in a statement released after the information was made public, pushed back on the idea he was advancing "Russian disinformation.”

DURHAM ASSUMED PARTS OF HUBER'S CLINTON INVESTIGATION

"To be clear, this is not Russian disinformation and has not been assessed as such by the Intelligence Community,” Ratcliffe said in a statement to Fox News. “I’ll be briefing Congress on the sensitive sources and methods by which it was obtained in the coming days.”

A source familiar with the documents told Fox News on Tuesday that the allegation was "not disinformation.”

"This is not Russian disinformation. Even Brennan knew, or he wouldn't be briefing the president of the United States on it," the source said. "There is a high threshold to orally brief the president of the United States and he clearly felt this met that threshold.”

Another source familiar with the documents told Fox News that "this information has been sought by hundreds of congressional requests for legitimate oversight purposes and was withheld for political spite—and the belief that they’d never get caught.”

The source added that the Brennan notes are significant because it is “their own words, written and memorialized in real time.”

Meanwhile, last week, during a hearing before the Senate Judiciary Committee, Comey was asked whether he received an investigative referral on Clinton from 2016, but he said it didn’t “ring any bells.”

“You don’t remember getting an investigatory lead from the intelligence community? Sept. 7, 2016, U.S. intelligence officials forwarded an investigative referral to James Comey and Strzok regarding Clinton’s approval of a plan [about] Trump…as a means of distraction?” Graham asked Comey.

“That doesn’t ring any bells with me,” Comey said.

Graham questioned “how far-fetched is that,” citing the fact that Clinton campaign and the Democratic National Committee, through law firm Perkins Coie, hired Fusion GPS and ex-British intelligence officer Christopher Steele to author and compile information for the controversial and unverified anti-Trump dossier.

The Clinton campaign and the Democratic National Committee, through law firm Perkins Coie, hired Fusion GPS and ex-British intelligence officer Christopher Steele to author and compile information for the controversial and unverified anti-Trump dossier.

The dossier contains claims about alleged ties between Donald Trump and Russia that served as the basis for Foreign Intelligence Surveillance Act (FISA) warrants obtained against former Trump campaign aide Carter Page.

Attorney General Bill Barr last year appointed U.S. Attorney of Connecticut John Durham to investigate the origins of the FBI’s Russia probe shortly after special counsel Robert Mueller completed his years-long investigation into whether the campaign colluded with the Russians to influence the 2016 presidential election.

It is unclear whether this information will be considered part of Durham’s investigation, or whether the president’s declassification will affect Durham’s investigation.

Last month, Fox News reported, though, that Durham had assumed aspects of U.S. Attorney John Huber’s investigation into the Clinton Foundation.

A source familiar with Durham’s investigation told Fox News last month that parts of what Huber was investigating in 2017 -- involving the Clinton Foundation -- have been incorporated in Durham’s investigation.

In November 2017, then-Attorney General Jeff Sessions directed Huber, the U.S. attorney for Utah, and other senior prosecutors to evaluate “certain issues” involving the sale of Uranium One, and other dealings related to the Clinton Foundation. Sessions tapped Huber after requests by congressional Republicans, who had been calling for the appointment of a special counsel to review the matters.

Huber was also tasked with reviewing the FBI’s handling of the Clinton email probe, including allegations that the Justice Department and FBI “policies or procedures” were not followed.

It has been unclear, for years, the status of Huber's investigation, but another source told Fox News Thursday that Huber has faced mounting criticism from the Justice Department and White House over his progress.

It is unclear whether any aspects of the Clinton email investigation were included in Huber’s review.