DNA proved that Thomas Jefferson had his slave mistress, Sally Hemmings; and Clinton shot off on Monica's dress. But lots of other alleged cases of philanderings exist: FDR, Eisenhower, Harding, Cleveland. Its a long list.
I think most Americans don't care about Presidential private lives anymore than Miscrosoft stockholders care about Bill Gates getting a blowjob, as long as his company performs well and makes money.
But perhaps these lies did affect others lives:
Nixon bombing Cambodia then the coverup?
Reagan/Bush's Iran-Contra lies? (I forgive Reagan because I'll assume he really didn't remember!)
GWBush going AWOL (
www.awolbush.com )