Well Richard Nixon was like a reform president. He was considered a good president by many Americans because he was against the Vietnam War. Although, later it was found out that Nixon was using his power to gain information on US citizens in the Watergate Hotel which was later known as the Watergate Scandel. I believe he resigned before he could be impeached. He has a famous photograph of him doing some hand gesture before boarding a plane leaving Washington. Here's a sit if you need more information: http://www.whitehouse.gov/history/presidents/r n37.html