I would say the media would cover it if Romney mentioned it, but they would only slap him down with the canned answer and say “for shame exploiting this tragedy — jumping the gun ahead of the facts!” So I do not know who else could end-run the media firewall.
I think it is going to take a local media person to ask the hard questions and pin the president down when he talks about “we will hunt them down” instead of narrating who knew what, when, who turned down requests for extra security prior to 9/11, who turned down the requests for help in real-time, and why didn’t we respond effectivley in real time. Someone will have to ask: “Did you underestimate the amount of violent turmoil you had helped unleash with the Arab Spring? If so, who is to blame for the failed intelligence? If not, why was insufficient security provided for our Ambassador?”
Actually, someone needs to write down a list of about 20 questions, in logical order, and walk him through them until he gets up and walks off, and catch that on camera.
Beyond that, protests at his appearances would help, if phrased pointedly (”Who was in charge in DC while our embassy was under attack? Where were you when our nation was under attack? What happens in Benghazi stays in Vegas.”)
A local Denver reporter did this yesterday, and I think the video is still up on freerepublic.com.