Good posts and important references. It’s important to not that the BLM has been acting in contravention of law and the objectives that you cite in order to force ranchers off the land. Their primary weapon has been the Endangered Species Act, but they use whatever works.
The same thing has been going on in the Forest Service and the National Park Service. The environmentalists have decided that all public land is reserved for them and for them alone. All other people and activities must be banned. Unless it’s a green energy scam, of course.