As a member of the Church of Jesus Christ of Latter Day Saints (a Mormon, like Romney although I most likely would NOT have voted for him), this is what our church says on the matter;
We claim the privilege of worshiping Almighty God according to the dictates of our own conscience, and allow all men the same privilege, let them worship how, where, or what they may.
We believe in being subject to kings, presidents, rulers, and magistrates, in obeying, honoring, and sustaining the law.
The two statement are linked so while people are allowed to claim the right to worship as they wish, they are subject to the law. For example members of the church are forbidden in China to talk about their religion to Chinese nationals but allowed to meet for church on a Sunday.
I would therefore support a decision that church and state should be separate.