Karl Rove's Crossroads America super pac has released an attack ad against Hillary Clinton about the attacks on a US State Department/CIA outpost in Benghazi, Libya in which four Americans were killed, that occurred while Clinton was Secretary of State.
The ad, and the fact of who is behind it, should make clear what's behind the numerous investigations into what would otherwise be a largely forgotten incident by Republican-controlled House committees that are underway or are about to be launched.
This about the 2016 presidential election. Hillary Clinton, the most popular politician in America at the moment, is the overwhelming early favorite to become the next president -- see this listing of the latest state by state polls, in which Hillary leads the top Republican in all but a few small states where mules outnumber books. Even in Texas, where there's a town called Mule Shoe.
Republicans don't have anyone of any substance they can hope to put up against her, and ads like this are being run already, and the House hearings are being conducted, to "drive up" Hillary Clinton's negative ratings in the polls and, Republicans hope, curtail her fundraising ability and forestall what is gradually, here and there, more and more, becoming the forgone conclusion that Hillary Clinton will be the next president.