Romney would be good- except for his Mormon religion.
I have nothing against him for his beliefs , and I don't think his religious beliefs would influence his decisions/opinions in government matters. (Regan had many Mormon advisors)
But the sad fact is; Americans are afraid of him because of this.
It's interesting that Huckabee and Romney underwent close scrutiny because of their religion, and eventually fell by the wayside, but everyone is afraid to question Obama about his.