Clark Gable was always Clark Gable. Today if they were casting Gone With the Wind, Rhett Butler would have a Southern accent. But back then, you went to a Clark Gable movie to see Clark Gable.
Jimmy Carter as President is like Truman Capote marrying Dolly Parton. The job is just too big for him.
I'm not really a political satirist. I don't kid myself. I'm more interested in doing the mannerisms and the personality.
If you become president, you're guaranteed to develop some nervous habit.