In a way -- and certainly if one takes a purist's view of Congress -- very few if any members could be considered "uncompromised." But Jane Harman's reputation has never been considered optimal by this blogger. She shares a spot in Washington's political basement with, ironically, AIPAC.
Harman was seen to be on a short list for a "top intelligence post" in the Obama administration, according to Warrick and Pincus, writing in the Washington Post in December. So she would have been undergoing the vetting process which would, in turn, throw up any hint of malfeasance with respect to AIPAC.
Back in 2006, after the Democratic shake-up in Congress, Jane Harman, who had been ranking member of the House Permanent Select Committee on Intelligence, was therefore a natural for the Democratic chair. She was passed over by Speaker Pelosi. As Joe Conason pointed out then, Harman was already under investigation.
Even if Harman is mostly or slightly or laterally or even literally "innocent," demanding the transcripts won't necessary get her the transcripts. The New York Times reports that the "full disclosure that Ms. Harman has called for may not be easy or even feasible."
That is one of the chief horrors of wiretapping. Let's imagine Jane Harman is, like you and me (of course!), completely innocent, a true servant of democracy, and a long-term fighter for your rights and mine. All that goodness can be thrown out the window by the Justice Department. DOJ has to take into account the larger picture. Wiretapping is, at least potentially, one of our more effective weapons of indiscriminate destruction, the use of which Harman has defended.