A harsh new ad from former Massachusetts governor Mitt Romney uses news footage from 1997 to remind voters of then-House speaker Newt Gingrich’s ethics violations. “History Lesson” is unusual in that neither Romney nor Gingrich appears. The entire 30-second spot consists of an NBC News report from Jan. 21, 1997, the day Gingrich was reprimanded by Congress for using tax-exempt money for political purposes and giving the House Ethics Committee false information.