President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE took to Twitter Saturday to react to the release of a previously classified memo alleging abuse of government surveillance powers by the Justice Department, claiming the memo “totally vindicates" him and assailing the Russia investigation as “an American disgrace.”

“This memo totally vindicates 'Trump' in probe. But the Russian Witch Hunt goes on and on,” Trump tweeted. “Their [sic] was no Collusion and there was no Obstruction (the word now used because, after one year of looking endlessly and finding NOTHING, collusion is dead). This is an American disgrace!”

This memo totally vindicates “Trump” in probe. But the Russian Witch Hunt goes on and on. Their was no Collusion and there was no Obstruction (the word now used because, after one year of looking endlessly and finding NOTHING, collusion is dead). This is an American disgrace! — Donald J. Trump (@realDonaldTrump) February 3, 2018

The memo, released Friday, accuses senior Justice Department officials of improperly using information from the so-called Steele dossier to obtain surveillance warrants on Carter Page, a member of the Trump transition team and former Trump adviser.

Republicans have seized on the memo’s release, saying it proves the Justice Department’s investigation into Russian interference in the 2016 election, led by special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE, is tainted by bias.

But it also says the Russia investigation was triggered by information the bureau obtained about George PapadopoulosGeorge Demetrios PapadopoulosTale of two FBI cases: Clinton got warned, Trump got investigated Trump says he would consider pardons for those implicated in Mueller investigation New FBI document confirms the Trump campaign was investigated without justification MORE, a former adviser to the campaign, rather than by Page.

The full memo can be read here.

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Trump on Friday approved the release of the memo, despite objections from top officials at the FBI and Justice Department. He called its revelations disgraceful.

“I think it’s a disgrace,” he told reporters. "A lot of people should be ashamed of themselves."

Democrats on the House Intelligence Committee blasted Republicans’ decision to release the memo, saying the document mischaracterizes sensitive information and fails to provide important context.

"It fails to provide vital context and information contained in DOJ’s FISA application and renewals, and ignores why and how the FBI initiated, and the Special Counsel has continued, its counterintelligence investigation into Russia’s election interference and links to the Trump campaign," the minority said in a statement Friday.

Democrats on the Intelligence Committee are pushing to release their own memo rebutting the GOP document.