Trent Lott resigned his leadership post.
Bob Ney, Ohio congressman in the Abramoff scandal.
Duke Cunningham.
Mark Foley.
Bob Livingston.
Newt Gingrich and Tom Delay both left Congress by not running for re-election. Newt resigned as Speaker.
By contrast, Clinton didn’t resign.
Dan Rostenkowski didn’t resign.
Barney Frank didn’t resign.
Gerry Studds didn’t resign.
Gary Condit didn’t resign. (he lost a primary)
James Traficant didn’t resign (he was kicked out).
Cynthia McKinney didn’t resign. (she hit a DC cop) (lost in primary)
William Jefferson ($90,000 bribe in his freezer) didn’t resign.
I’m sure there are more...
Good reply. You know your stuff.