Billionaire Paul Singer has bought a sizeable stake in Twitter. Singer who is also a Republican donor has been reported as having “plans to push” Twitter CEO Jack Dorsey out of the company.

Singer has also been very vocal in the past against President Trump. In 2017 it was reported that Singer leaked to Fusion GPS’s opposition research of President Trump during his campaign. Breitbart reported:

Late Friday, Singer’s Washington Free Beacon came clean as the original funding source for Fusion GPS’s research against now-President Donald Trump. Fusion GPS research was later funded by Democrat Hillary Rodham Clinton’s campaign, and created the now-infamous fake news dossier against Trump, but the efforts originally lay with Singer.

Multiple outlets reported Friday night that lawyers for the Free Beacon had just informed the House Intelligence Committee that their outfit was the first to engage Fusion GPS to conduct opposition research against then-candidate Trump. The neoconservative media outlet emphasized in a statement that this engagement involved all of the GOP candidates for president – not merely Trump – and never involved Russia or dubious former intelligence asset Christopher Steele, before the project was dropped and taken over by Hillary for American and the Democratic National Committee in the Spring of 2016 through potentially illegal payments made through law firm Perkins Coie.

When news of the DNC and Hillary Clinton campaign’s involvement in the dossier, a primary source of the “Russia Story” dogging the first ten months of Trump administration, first broke, the Washington Post reported “one Republican” had been involved. That Republican is now clearly Singer, the Free Beacon’s main funder.

Singer’s involvement in the dossier, and opposition research on Trump more generally, comports with a years-long pattern of advocacy for mass immigration, massive funding of establishment GOP candidates, and antagonism towards the populist-nationalist movement.

President Trump responded with, “As you know, Paul was very much involved with the anti-Trump or as they say ‘Never Trump,” and Paul just left [the White House] and he’s given us his total support and it’s all about unification. So, I want to thank Paul Singer for being here and coming up to the office. He was a very strong opponent and now he’s a very strong ally and I appreciate that.”

Read More: Breitbart