George Q. Cannon claims that Joseph Smith taught that the constitution will one day only be upheld by the Latter-day Saints.
George Q. Cannon, "Peace and Prosperity of the Saints—Growing Importance of the Church From Its Organization—The Work of God and not of Man—God's Blessing Upon the Righteous; His Curse Upon the Unrighteous—The Liberty of the Gospel—The Saints Preserved From War and Bloodshed—Their Union and Universal Goodwill," Journal of Discourses, 26 vols. (Liverpool: John Henry Smith, 1883), 23:104
[T]he day will come-and this is another prediction of Joseph Smith’s-I want to remind you of it, my brethren and sisters, when good government, constitutional government-liberty-will be found among the Latter-day Saints, and it will be sought for in vain elsewhere; when the Constitution of this land and republican government and institutions will be upheld by this people who are now so oppressed and whose destruction is now sought so diligently. The day will come when the Constitution, and free government under it, will be sustained and preserved by this people.