In a statement accompanying the release of the Simpson transcript Tuesday, Feinstein said "the American people deserve the opportunity to see what (Simpson) said (about the dossier) and judge for themselves". Simpson had urged its release, and the document contained few surprises.
Feinstein has never ruled out the possibility of finding collusion between the campaign and Russians, although she said last month that Special Counsel Robert Mueller, who is overseeing a separate federal probe, seems to be focusing on building "a case of obstruction of justice" against Trump for his firing of FBI Director James Comey.
Simpson, a former Wall Street Journal reporter, described his company's work much differently in his August 22 testimony to the Judiciary Committee.
President Trump on Wednesday denounced Sen.
Eventually, Fusion GPS hired Christopher Steele, a former British spy who had worked in Russian Federation in the 1990s, to reach out to his sources there. To date, no evidence has emerged that Trump was blackmailed. "It's a national security issue", Simpson recalled Steele saying. Chuck Grassley, who chairs the Judiciary Committee, said Ms. Feinstein's actions were "confounding".
The split between Feinstein and Grassley has widened in recent weeks.
More dramatically, Grassley and Sen. Chuck Grassley and Lindsey Graham referred Christopher Steele, the author of the Trump-Russia dossier, to the Department of Justice for possible criminal charges. They said Steele may have lied to investigators about his contacts with reporters.
"The fact that Sneaky Dianne Feinstein, who has on numerous occasions stated that collusion between Trump/Russia has not been found, would release testimony in such an underhanded and possibly illegal way, totally without authorization, is a disgrace", Trump tweeted Wednesday morning.