As the former Senior Democratic Congresswoman on the House Intelligence Committee, Jane Harman was in a position to be informed about the intelligence operations and errors of the Bush Administration between 2002 and 2006.  

Importantly, Rep. Harman did nothing substantive to try to stop Illegal Warrantless Wiretapping, choosing instead to rubber stamp any and all Bush Administration schemes.  

We now learn of another intelligence misadventure of which Jane Harman was informed:
The CIA destroyed tapes of interrogations of captured high-level al Qaeda operatives.  Almost certainly, this was done to cover-up illegal or unethical torture of detainees, essentially amounting to criminal cover-up.

Jane Harman apparently wrote a letter of complaint when she learned of the cover-up in 2003.  She did not, however, do anything meaningful to expose or stop the Bush Administration's destruction-of-evidence agenda.