It is a pity that the true offenders in this debacle are immune from prosecution.
Feinstein and the others in the Senate are immune because their offenses were committed with in their official duties.
I think there is a limit to that. I am wondering how much sarcasm there is in that phrase my friend Feinstein. I do believe Senators have been convicted of crimes. Feinstein should be no different. Their immunity is limited to slander on the Floor of the Senate, I am pretty sure. Conspiring against the GOvernment of the United States is not gonna be a crime granted immunity by the Constitution.
Speaking to the press is not a legislative function. Legislators repeating defamatory statements to the media that they said as a legislator on the Senate/House floors, or in committee hearings gives rise to a cause of action for defamation. Senator Proxmire learned that hard lesson when he was sued by a government researcher.