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Feinstein posts testimony of Fusion GPS co-founder

Sen. Dianne FeinsteinDianne Emiel FeinsteinCaitlyn Jenner exploring bid for California governor: report WokeWorld comes for 'oppressor' Obama: Activists rip school being named after 'deporter in chief' Senators press for answers in Space Command move decision MORE (D-Calif.) has posted the entire transcript of closed-door testimony that Fusion GPS co-founder Glenn Simpson made to the Senate Judiciary Committee.

Fusion GPS last week demanded that the full transcript be released, sparking a fight with Judiciary Chairman Chuck GrassleyChuck GrassleyNumber of migrants detained at southern border reaches 15-year high: reports Grassley, Cornyn push for Senate border hearing The Hill's Morning Report - GOP pounces on Biden's infrastructure plan MORE (R-Iowa) over who was standing in the way of the document being released. 

The Senate Judiciary Committee interviewed Simpson in August as part of its investigation into Russia's election interference. 

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Simpson has emerged as a central figure in the probes into Russian election interference after his firm helped assemble a controversial dossier tying President TrumpDonald TrumpTrump: McConnell 'helpless' to stop Biden from packing court Romney on NRSC awarding Trump: Not 'my preference' McConnell sidesteps Trump calling him 'dumb son of a b----' MORE to Russia.

Former British intelligence officer Christopher Steele compiled the document, which includes unverified allegations against Trump and his links to Moscow.

GOP senators have recommended that Steele face a criminal investigation.

Read the transcript of Simpson's testimony below: