President Trump touted his order to release key documents tied to the alleged Russia collusion case as a possible “crowning achievement” to expose the FBI’s “hoax” probe, according to a report.

“What we’ve done is a great service to the country, really,” Trump told Hill.TV in an Oval Office interview Tuesday.

“I hope to be able to call this, along with tax cuts and regulation and all the things I’ve done … in its own way this might be the most important thing because this was corrupt,” he added.

On Monday, the president ordered the Justice Department to release documents and emails from four former FBI officials and one current Justice Department official, as well as documents that led to the surveillance of his former aide Carter Page.

Trump has long raged over special counsel Robert Mueller’s wide-ranging probe into Russian interference in the 2016 election and possible ties to the Trump campaign — insisting that the only collusion was done by Democrats.

And he has repeatedly accused former FBI Director James Comey and his former deputy, Andrew McCabe, Justice Department lawyer Bruce Ohr, former FBI agent Peter Strzok and former bureau lawyer Lisa Page of conspiring against him.

House Republicans have requested the documents, but the Justice Department was leery of releasing them because of Mueller’s ongoing probe, which has resulted in a guilty plea from Trump’s former campaign chairman, Paul Manafort.

In his interview, Trump also expressed regret for not firing Comey immediately instead of waiting until May 2017.

“If I did one mistake with Comey, I should have fired him before I got here. I should have fired him the day I won the primaries,” Trump said.

“I should have fired him right after the convention, say I don’t want that guy. Or at least fired him the first day on the job. … I would have been better off firing him or putting out a statement that I don’t want him there when I get there.”

Trump also assailed the Foreign Intelligence Surveillance Act court’s approval of the warrant that authorized surveillance of Carter Page toward the end of the 2016 election, suggesting the FBI misled the court.

“They know this is one of the great scandals in the history of our country because basically what they did is, they used Carter Page, who nobody even knew, who I feel very badly for, I think he’s been treated very badly,” he said.

“They used Carter Page as a foil in order to surveil a candidate for the presidency of the United States.”

The president said he had not read the documents he ordered declassified but said he expected they would prove the FBI case began as a political “hoax.”

“I have had many people ask me to release them. Not that I didn’t like the idea but I wanted to wait, I wanted to see where it was all going,” he said.

The Justice Department has already begun working with the Office of the Director of National Intelligence to comply with Trump’s order.

“When the President issues such an order, it triggers a declassification review process that is conducted by various agencies within the intelligence community, in conjunction with the White House Counsel, to seek to ensure the safety of America’s national security interests,” a Justice Department spokesperson said in a statement.

Trump’s order spurred a backlash from Democrats and praise from a group of conservative Republicans, many of whom are members of the Freedom Caucus, according to CNN.

“The president shouldn’t be declassifying documents in order to undermine an investigation into his campaign or pursue vendettas against political enemies,” said Mark Warner of Virginia, the top Democrat on the Senate Intelligence Committee.

“He especially shouldn’t be releasing documents with the potential to reveal intelligence sources.”

On Tuesday, top Democrats sent a letter to Director of National Intelligence Dan Coats, Deputy Attorney General Rod Rosenstein and FBI Director Christopher Wray expressing “profound alarm” at Trump’s directive.