Dianne Feinstein on twitter for unilaterally releasing the complete transcript of an interview between congressional investigators and the founder of Fusion GPS, the opposition research agency that commissioned the controversial file on Trump in the course of the 2016 campaign.
The 84-year-old Feinstein, who is up for reelection in 2018, faces a primary challenge from California's progressive State Senate President Pro Tem Kevin de León.
Senate Judiciary Chairman Chuck Grassley, R-Iowa, was sharply critical of Feinstein's decision to release the transcript without consulting with him first. Lindsey Graham, R-South Carolina, referred Christopher Steele, the former British intelligence officer who compiled a dossier with allegations concerning President Trump and Russian Federation, to the Justice Department for investigation.
In October, The Washington Post reported the Hillary Clinton campaign and the Democratic National Committee had helped fund Fusion GPS' research on Trump's alleged ties with Russian Federation.
Additionally, Judiciary Chair Chuck Grassley (R-IA) last week sent a letter to the Justice Department recommending that Christopher Steele, the ex-British spy Fusion GPS hired to write the dossier, be investigated for criminal charges.
In particular, the document alleged that the Russian government had collected compromising information about Trump, which has been denounced by the U.S. president and called a forgery by Moscow.More news: Rancher Cliven Bundy walks out a free man
The lengthy transcript was released over the objections of Republicans, who have been sharply critical of Simpson's firm, Fusion GPS.
A spokesman for Grassley called Feinstein's release of the testimony "totally confounding". "The only way to set the record straight is to make the transcript public", she said. "Her action undermines the integrity of the committee's oversight work and jeopardizes its ability to secure candid voluntary testimony", such as from Jared Kushner, Trump's son-in-law and top adviser.
Steele briefed an Federal Bureau of Investigation agent in July 2016.
The FBI believed Steele's "information might be credible because they had other intelligence that indicated the same thing, and one of those pieces of information was a human source inside the Trump organization", Simpson testified.