Simpson testified in August before the Senate Judiciary Committee behind closed doors - but his testimony was kept secret.
Look, they argued, the Donald Trump investigation was completely justified because the infamous "dossier", according to Simpson, had been corroborated by the FBI. Clinton Campaign, DNC funded Dossier. "Republicans should finally take control!"
Dick DurbinRichard (Dick) Joseph DurbinDemocrats turn on Al Franken Minnesota's largest newspaper calls on Franken to resign Democratic senator predicts Franken will resign Thursday MORE (D-Ill.), who was in the room for the meeting, said Trump had in fact used the language.
Simpson and Fusion co-founder Peter Fritsch had urged the committee's Republican leaders to release transcripts of their testimony in a New York Times opinion piece last Tuesday entitled "The Republicans' Fake Investigations".
The material wasn't classified, and Feinstein said Wednesday that she didn't do anything illegal. Feinstein had the ability to release the transcripts as the top Democrat on the committee, and her staff helped conduct the interview with Simpson.
Several GOP-led committees are now investigating whether the dossier formed the basis for the FBI's initial investigations. Sheldon Whitehouse and Richard Blumenthal sent a letter to Republican Sen.
In a follow-up Tweet, the President noted that the House of Representatives is taking up legislation regarding the FISA Amendments Act, which President Trump said may have been used in surveillance of The Trump Campaign.
Democrats say those investigations are a distraction.
In a wild and awesome statement Thursday, Rep. Jackie Speier (D-CA) says President Donald Trump's Tweets make the U.S. "less safe" and his Twitter account should be shut down.
"The innuendo and misinformation circulating about the transcript are part of a deeply troubling effort to undermine the investigation into potential collusion and obstruction of justice", Feinstein said in a statement.
"I understand Chris severed his relationship with the FBI out of concern that he didn't know what was happening inside the FBI and there was a concern that the FBI was being manipulated for political ends by the Trump people", Simpson told the Senate Judiciary Committee.
Grassley is the chairman of the Senate Judiciary Committee, which has been conducting an investigation running parallel to special counsel Robert Mueller's probe into Trump's alleged ties to Russian Federation.