Feinstein posts testimony of Fusion GPS co-founder

Sen. Dianne FeinsteinDianne Emiel FeinsteinBiden signs bill to bolster crime victims fund Stripping opportunity from DC's children Progressive groups ask for town hall with Feinstein to talk filibuster 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 GrassleyThe Hill's Morning Report - Presented by Facebook - Jan. 6 probe, infrastructure to dominate week Grassley pressured to run as Democrats set sights on Iowa The Hill's Morning Report - Pelosi considers adding GOP voices to Jan. 6 panel 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 TrumpCuban embassy in Paris attacked by gasoline bombs Trump Jr. inches past DeSantis as most popular GOP figure in new poll: Axios Trump endorses Ken Paxton over George P. Bush in Texas attorney general race 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: