The video below explains another method used to take private land from Americans. The goal is to lock up land and force humans into human settlements and ban or severely restrict access to resources. In Idaho the Nature Conservancy, UN NGO, is actively working to take land from private owners via "conservation easement" which contributes to the development of Wildways, large swaths of land that will be banned for human use. This video explains the Wildlands Project, now the Wildways project. Here is a map of how much western land they want banned for use.
And there is also the Y2Y Project.
Notice how much Idaho land is taken in each of these maps.
For an idea on just how much land is being taken it is happening in Florida with Florida Forever. Here is some information on it.
North Western Research Institute
Secure the Republic
Tri-County Tea Party-FL
These projects, conservation easements, eminent domain, biodivesity, riparian corridors, regulations...all of these are being used to take land from Americans.