Impeached BC over an affair? Bill Clinton was impeached for the same reason he was convicted of Contempt of Court by a federal judge.  He violated court orders several times to tell the truth to the Paula Jones Grand Jury. Since he violated the orders to tell the truth, then he lied to a Grand Jury. As far as I know, that is called perjury. That is what he was impeached for. As far as Bush and Cheney should have been found guilty of war crimes, The democrats could find nothing to investigate them for.