This is not your average imminent domain case. It involves national security.
The property is not just taken. The property owner is offered fair market value for the land. If an owner refuses tbe offer(s) the case moves to the court.
From what I have read on the issue, a large percentage of the ranchers, etc would gladly sell a portion of their property. They suffer the most. Illegals trash their land, kill their cattle, and break in to their homes.