President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE on Tuesday lashed out at the FBI and the Clinton campaign on the Russia dossier compiled against him and his 2016 campaign.

"WOW, @foxandfriends 'Dossier is bogus. Clinton Campaign, DNC funded Dossier. FBI CANNOT (after all of this time) VERIFY CLAIMS IN DOSSIER OF RUSSIA/TRUMP COLLUSION. FBI TAINTED.' And they used this Crooked Hillary pile of garbage as the basis for going after the Trump Campaign!" Trump tweeted, the latest in his ongoing smear on the FBI.

WOW, @foxandfrlends “Dossier is bogus. Clinton Campaign, DNC funded Dossier. FBI CANNOT (after all of this time) VERIFY CLAIMS IN DOSSIER OF RUSSIA/TRUMP COLLUSION. FBI TAINTED.” And they used this Crooked Hillary pile of garbage as the basis for going after the Trump Campaign! — Donald J. Trump (@realDonaldTrump) December 26, 2017

The dossier, a compilation of opposition research against the 2016 Trump campaign, was partly funded by Clinton's campaign and the Democratic National Committee (DNC). It included several incendiary claims against Trump and his campaign that have loomed over his presidency.

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While the research for the dossier was originally aimed at finding information on the entire field of GOP candidates, it alleged ties between the Trump campaign and Moscow that eventually became the focus of the project.

Some Republicans on the House Intelligence Committee, which has investigated witnesses in connection with the dossier, have begun to probe into the FBI's and Justice Department's handling of the look into the claims included in the document.

BuzzFeed News published the controversial dossier in January, which includes many salacious claims that have not been verified.

Trump has also targeted the FBI in recent weeks for what many Republican lawmakers believe was a biased and politically motivated approach to its investigation of collusion between Russia and the Trump campaign.

The Justice Department allowed the House Intelligence Committee earlier this month to interview an FBI employee thought to be an informant to the dossier's leading researcher, amid calls from Trump attorneys for a second special counsel to investigate links between the bureau and the private company that commissioned the dossier research.

The Intelligence Committee has attempted to slap contempt citations on the department and the FBI for its investigation into claims of Russian collusion in the dossier.

FBI Deputy Director Andrew McCabe, who is facing new criticisms from Trump for his role in the FBI's probe, testified before the committee last week.