Isn't there a direct correlation between self-control and weight? Of course there is. All one has to do to lose weight is eat less. Gov. Christie at some time obviously lacked self-control or he would not be so alarmingly obese. And this surely speaks to his self-image and self-control.
If one can't control himself, it is reasonable to ask how he is qualified to control others. It is desirable to speak and act as an enlightened statesman, but much credibility is lost if one doesn't look like one. That said, I for one, and probably others, would long hesitate before trusting such an individual with momentous decisions.