Back during the Johnson administration Charles DeGaulle demanded the United States collateralize the loans owed to France in gold and started carting out the bullion from the treasury. This caused several other nations to demand the same and President Nixon had to slam the gold window closed or the treasury would have been emptied, since the United States was even then in debt for more money than the treasury could cover in gold.
But Nixon had to collateralize that debt somehow, and he hit upon the plan of quietly setting aside huge tracts of American land with their mineral rights in reserve to cover the outstanding debts. But since the American people were already angered over the war in Vietnam, Nixon couldn't very well admit that he was apportioning off chunks of the United States to the holders of foreign debt. So, Nixon invented the Environmental Protection Agency and passed draconian environmental laws which served to grab land with vast natural resources away from the owners and lock it away, and even more, prove to the holders of the foreign debt that US citizens were not drilling. mining, or otherwise developing those resources. From that day to this, as the government sinks deeper into debt, the government grabs more and more land, declares it a wilderness or "roadless area" or "heritage river" or "wetlands" or any one of over a dozen other such obfuscated labels, but in the end the result is the same. We The People may not use the land, in many cases are not even allowed to enter the land.
This is not about conservation, it is about collateral. YOUR land is being stolen by the government and used to secure loans the government really had no business taking out in the first place. Given that the government cannot get out of debt, and is collateralizing more and more land to avoid foreclosure, the day is not long off when the people of the United States will one day wake up and discover they are no longer citizens, but tenants.