More than 20 Trump administration officials spoke to Special Counsel Robert Mueller’s team as part of his investigation into Russian meddling in the US election and possible collusion with the president’s campaign, a new report said Thursday.

The White House also turned over 20,000 pages of documents, including hundreds related to fired FBI Director James Comey and disgraced ex-national security adviser Michael Flynn and Russia, according to a memo released by one of President Trump’s lawyers, The Washington Post reported.

The lawyer, John Dowd, told the paper he created the document to “summarize this extraordinary cooperation,” saying that Team Trump had provided “unprecedented” transparency to Mueller’s and congressional Russia investigations.

Dowd called it “the most transparent response in history by a president” to a special counsel.

But the document was released as the White House, GOP lawmakers and the conservative media are alleging a widespread conspiracy by the FBI, the Justice Department and Democrats — all supposedly part of the “deep state” — to smear the president.

Sen. Chuck Schumer on Thursday pushed back against the narrative — which Democrats and ex-Justice officials say is based on little if any evidence.

“The right has waged an aggressive & coordinated attack on the integrity of the Special Counsel, and now that political smear campaign has bled into a spiraling & delusional attack on the @FBI itself,” Schumer wrote in one of a series of angry tweets.

“The Republican campaign to attack the FBI has been joined by the same forces that interfered in the 2016 election – WikiLeaks, Julian Assange, and Russia. Just a few years ago those things were actually attacked by the GOP, particularly by the hard right. How things have changed,” he added.

Mueller’s investigators plan to interview Trump in the coming weeks — but the president has repeatedly attacked their probe as “fake news,” “a witch hunt” and “a hoax” cooked up by Dems out to get him.

Trump also said he was the target of an obstruction investigation only because he was “fighting back” against charges of Russian meddling.

“You fight back, ‘Oh, it’s obstruction,’” the president said.

Analysts charge that Trump’s dismissive attitude threatens future elections because he won’t even acknowledge that well-documented Russian interference even happened.

“It’s actually astonishing it’s been a year and he hasn’t acknowledged fully that meddling into the campaign has happened. And I have to say he has been enabled by many members of the band wagon to, you know, look for conspiracies basically everywhere else except, you know, where the Russians were actually trying to attack the united states,” former FBI agent Asha Rangappa, a senior lecturer at Yale University’s Jackson Institute for Global Affairs, told CNN.

“This is a big problem, especially since we know, as the intelligence community repeatedly said, that Russia is continuing to try to influence American politics.”