Stupid in what McCainiac reveals about himself when he says that.
It is true that good people can be tempted to do bad things. Certain environments tempt the good more than other environments do.
But it isn't at all hard for good people to set up environments that keep them from being tempted. Witness what W. and the GOP did not do because of all the money Enron gave the Pubbies.
McCainiac is just looking for an excuse.
Shalom.