We elect people to work on our behalf, expecting you to work together like adults. We demand that all investigations & committees, focused on the Benghazi embassy attack in 2012, from testimony to personal emails related to the attacks & subsequent investigation, be reviewed & investigated by the FBI.
If it is determined that any investigation was conducted specifically to discredit someone for political purposes, that is negative campaigning & using taxpayer money for such is violation of the law (also see House Ethics Man, Ch 4 of campaign activity). Those involved should be held accountable for the costs. Those elected officials who participated to discredit anyone should be reprimanded, censured, & the voters of their state should be informed of the procedure to recall them.