Original sentence: On June 16, 2009, Ensign admitted he had an extramarital affair between December 2007 and August 2008 with a female member of his campaign staff
Edited sentence: On June 16, 2009, Ensign, a  vocal detractor of President Clinton in 1998 due to the Lewinsky scandal, admitted he had an extramarital affair between December 2007 and August 2008 with a female member of his campaign staff