Already happened a few years back. A rancher held some illegals for the BP and HE was arrested for kidnapping. I'm not sure about the criminal case, but the ILLEGALS sued and WON his ranch( I think around 600 acres). He is now homeless with a criminal record.
This guy has held 12,000 illegals for the BP over the past ten years. I think he should sue the US Govt and Border patrol for failure to protect him and his property.
Unfortunately, the SCOTUS has supported local governments rights to use eminent domain to seize private property. Watch some crazy local govt officials down there to seize this guys ranch and make it a safe haven for the illegal aliens.
It was 70 acres of land, that the illegal immigrants won in court from a Citizen of the United States of America.