Hillary Clinton's campaign has released its first national television ad, set to hit airwaves today -- featuring comments made by Rep. Kevin McCarthy, R-California, who is likely to be the next Speaker of the U.S. House of Representatives, about how the committee investigating Benghazi and her emails has led to a drop in her poll numbers. The 30-second spot, titled "Admit," is the latest move by Clinton's campaign to highlight McCarthy's remark, made last week on Fox News, which her team claims is proof that the Benghazi probe was set up to destroy Clinton's campaign.