Utah moves to sue the US over Federal Lands.
This stands to potentially be a disaster of epic proportions for the West, and the United States in general.
It also bears the huge risk of the application of the Law of Unintended Consequences. The odds of it prevailing are regarded as long, but the President could avoid the matter by withdrawing all the lands immediately and declaring them national monuments, or the U.S. Supreme Court, if it takes it up, could declare them to be unceded Indian lands.