Though there is a lot of white washing going on right now (pun unintended), the Mormon church has long held these incredibly racist beliefs, and it took until 1978 for them to buckle under to public pressure and allow African Americans to be ordained into their priesthood, which is a right of passage for EVERY OTHER Mormon male.
Mitt Romney has been a member of this church his entire life, and for MANY years before 1978, how much of that indoctrinated racism do you think he still clings to today?
If his attitude toward the President is any indication, I would say that regardless of how much his church has evolved in order to stay relevant, HE has not yet caught up with it.