Every democrat is complicit in covering up what their fearless leader did.
It's not just the dems. The globalist warmongers who have taken over both parties do not want any investigation of Benghazi weapons getting to AlQaida "freedom fighters" in Syria. Keep in mind that Romney backed off on using Benghazi as a campaign issue when Obama asked him to do so.
That would've been the time to get it out in the open, when everyone was paying attention.