Hillary Clinton's campaign is attacking the email controversy 'charade'

Former Secretary of State Hillary Clinton's presidential campaign released a new video Wednesday attacking the House Republicans investigating her.

The video mocks Rep. Trey Gowdy (R-South Carolina), who heads the House committee investigating the 2012 attack in Benghazi, Libya, that killed the US ambassador there and three other Americans.

Many Republicans believe Clinton's State Department covered up aspects of the attack at the time, but the Clinton campaign said the House investigation is only trying to dig up dirt to harm her White House ambitions. 

"How long will Republicans keep spending tax dollars on this political charade?" the video asks.

According to Politico's Mike Allen, the video represents a Clinton camp "prebuttal" to expected criticism over the latest batch of her State Department emails released late Tuesday night. The emails, which include her struggling to operate a fax machine, don't appear to contain any bombshells. 

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