The states should all just go in, tear down all the fedgov signs and auction off the land at bargain basement prices to ranchers, oil men, and land developers.
There are some legitimate takings, such as Indian reservations and military reservations, plus a few of the “national crown jewels”. However, the takings by “presidential proclamation” need to end and be reversed.
It is for the best if this is done in a methodical manner by a willing congress, which avoids many court fights. It should be done as part of a systematic reduction in presidential power, and restoration of civil rights.