WATCH: Merrick Garland refuses to commit to releasing report on the origins of the Trump-Russia investigation

Senator Chuck Grassley (R-IA) asked Garland if he "would commit to releasing special counsel Durham's report just like the Mueller report was made public?"

"I am a great believer in transparency," Garland began, "I would though have to talk with Mr. Durham and understand the nature of what he's been doing and the nature of the report, but I am very much committed to transparency and to explaining justice department decision-making."

Durham began an investigation into Crossfire Hurricane, the FBI investigation which sparked the Mueller probe of the 2016 Trump campaign's connections to Russia.

The investigation has resulted in one criminal prosecution thus far, with a former FBI lawyer admitting to editing the contents of an email from the CIA. He edited the email to state that Carter Page, who was a contact in FBI investigation, we "not a source."

Durham's investigation is ongoing, with Judge Garland saying that he does not intend to put an end to it early.

The investigation into the Trump campaign's connection to Russia has been a subject of intense controversy, with former President Donald Trump having repeatedly described it as a "hoax" perpetrated by the Democrats to wreck the legitimacy of his presidential mandate.

Republicans heavily criticized the investigation as being illegitimate, arguing that the Steele dossier which helped spark the investigation was opposition research from the Clinton campaign which should not have been taken seriously by government agencies. Investigators used the Steel dossier to obtain a FISA warrant to spy on the Trump campaign.

The investigation resulted in a number of convictions for charges largely unrelated to alleged collusion with Russia itself, but the final report on the matter said that it could not conclude that the Trump campaign colluded with the Russian government.