Senate Judiciary Chairman Lindsey Graham has written Attorney General William Barr seeking the declassification of documents including a 'chart' about the FBI's early efforts to verify a document containing explosive allegations about Donald Trump.

The letter asks Barr to declassify 'as much as possible.' It was dated Thursday, a day before a Justice Department Inspector General's report on former FBI Director James Comey's retention and release of memos he drafted after his interactions with Trump in 2017.

Graham's letter specifically asks Barr to declassify the 'chart that shows the FBI’s attempts to verify the allegations in the Steele dossier.'

That is a reference to the golden showers dossier, the unverified dossier of financial and personal information that ex-British intelligence officer Christopher Steele compiled on Trump during the campaign.

Senate Judiciary Committee chairman Lindsey Graham has written the attorney general seeking the release of 'as much as possible' – including a chart on efforts to verify the golden showers dossier

Graham is also seeking 'any FBI or Department documents or communications discussing Christopher Steele’s credibility and/or biases or the FBI or the Department’s knowledge of Steele’s contacts with members of the media.'

According to Graham's letter, an investigation into the FBI's conduct by Inspector General Michael Horowitz is 'nearing completion.' The probe also looks at the process that led to surveillance warrants on former Trump foreign policy advisor Carter Page, who had Russia contacts and flew to Moscow during the campaign.

Graham seeks 302s, the raw documents FBI agents compile after interviews, pertaining to Steele, political intelligence firm Fusion GPS, and its head Glenn Simpson, who commissioned Steele to produce the research that became the dossier.

Sen. Lindsey Graham is seeking to declassify documents about the FBI's conduct during the 2016 campaign

Graham is seeking a chart on the FBI's efforts to verify the Steele dossier

Graham seeks a chart on efforts to verify the dossier compiled by Christopher Steele

Graham is conducting his own probe into the FBI, and wants as much made public as possible

Graham references the infamous golden showers dossier compiled on Donald Trump

Republicans are awaiting a report on efforts to obtain surveillance on former Trump advisor Carter Page, who traveled to Moscow during the campaign

Graham also seeks the release of the FBI’s confidential human source reports and related documents and communications for Christopher Steele.

Putting out detailed information on confidential sources of information would likely bring pushback from within the bureau itself, although the bureau was sent reeling by Trump's firing of Comey and the firing of former deputy director Andrew McCabe and other officials involved in the Russia probe.

According to the letter, Graham also seeks documents on 'the defensive briefings given to both the Clinton and Trump campaigns.' That is a likely reference to the briefing that the Russians would probably try to infiltrate and spy on the Trump campaign.

Attorney General Bill Barr

The Mueller report catalogues repeated contacts between the Trump campaign and Russians, but did not uncover any evidence the Trump team conspired with Russia to hack Democratic emails.

Republicans are pushing for the release of information which reveals more about the FBI's basis for surveillance of Trump campaign members

Graham, a Trump ally who is using his perch to probe FBI conduct but did not call former Special Counsel Robert Mueller as a witness, said he wants Barr to be able to provide 'the most complete results' of his own probe to the public.

Barr has commissioned an investigation of the FBI's conduct during the 2016 election, when the bureau was able to obtain court-authorized surveillance warrants of Trump campaign advisors.

'In order for the Inspector General to be able to present the most complete results of his investigation to Congress and the American people, certain documents will need to be declassified and released to the public,' Grahm wrote, Fox News reported.

Graham clashed with Trump during the campaign and was a close friend of Trump rival Sen. John McCain, but has become a fierce defender of Trump

'I write to urge you to declassify all documents the Inspector General identifies as appropriate for declassification as much as possible, without harming national security,' wrote Graham.

Last week, a separate Horowitz report was released on Comey's retention of memos he wrote after his unusual interactions with Trump. DOJ declined to prosecute, although Horowitz that he broke FBI rules.

Graham wrote last week: 'The Inspector General's report is a stunning and unprecedented rebuke of a former Director of the FBI.'

Trump also blasted Comey – who wrote in his memos that Trump asked him for 'loyalty' early in the administration, asked him to let go an investigation of his national security advisor, and queried him about the golden showers dossier – as a 'dishonest fool.'

'The disastrous IG Report on James Comey shows, in the strongest of terms, how unfairly I, and tens of millions of great people who support me, were treated. Our rights and liberties were illegally stripped away by this dishonest fool. We should be given our stolen time back?' Trump wrote.