In our religious faith, the United States is considered "the Promised Land", a land blessed by The Lord. We, as inhabitants of this great nation, must serve the God of this land, or be swept off. From The Book of Mormon: Another Testament of Jesus Christ:
10 For behold, this is a land which is choice above all other lands; wherefore he that doth possess it shall serve God or shall be swept off; for it is the everlasting decree of God. And it is not until the fulness of iniquity among the children of the land, that they are swept off.