Mormonism and the State

Many skeptics of Mitt Romney on both the right and the left are concerned that he would impose his Mormonism on the State, constituting a dangerous mixing of religion and political power. I am confident that there is no basis to such a concern and represents either bigotry or ignorance. However, the more interesting concern for me is not how Mormonism will affect the State, but how the State will affect Mormonism.