President Bill Clinton was impeached on December 19th, 1998.. because he was proven to be involved in unlawful activity.
1. Perjury / 2nd Perjury Charge later on.
2. Obstruction of Justice / Abuse of Power.
3. Sexual Harassment lawsuit which was filed against Bill Clinton by Paula Jones.
He was later found NOT GUILTY on FEBRUARY 12th, 1999.