If the goal really is to stir up resistance, the anti-Clinton harrassment of the 1990's will seem tame in comparison to what's coming. But it could backfire, too. The GOP's Achilles heel (that means "weakness," Gov. Palin) is its tendency to keep using once-successful strategies long after their sell-by date. Americans could easily become infuriated if they come to believe one party is sabotaging the other at the expense of the public's well-being.