Gov. Cumming wrote a letter to Brigham Young informing him that violent acts authorized and commanded are treasonable; that those involved are subject to the penalties accorded traitors; and the Territory is in a state of rebellion. He also issued a Proclamation to the people of Utah stating his duty "to enforce unconditional obedience." He assured that there would be no interference with their right to religious freedom.
[Source: Hale, Van, Mormon Miscellaneous, Utah War Chronology, http://www.mormonmiscellaneous.com/utahwar/id2.html]