Cliven Bundy
states that his rights to graze his cattle on federal land derive from the fact his
Mormon ancestors were using the land
far before the federal government claimed authority. The BLM has ordered his cattle off the land.
Using that rationalization, then his Mormon family has no rights to even be on the land. Since the American Indians occupied the land before him, and the federal government used its authority to take it away from the Indians, then what he claims as his grazing rights are really those of the American Indian.
http://www.washingtonpost.com/blogs/the-fix/wp/2014/04/15/everything-you-need-to-know-about-the-long-fight-between-cliven-bundy-and-the-federal-government/