It would seem that catering to law breakers is a lucrative business to put up such a fight. I say build a fence around these people's property and that will funnel all of the border crossing traffic over their land which shouldn't take long to completely destroy.
Law-breakers? Since when are American conservatives in favor of government mandates overriding property rights? Or, riding rough-shod over the individual landowner... people have settled because they can’t afford the fight.
I know a gentleman who fought a gas main across the frontage of his property. He made them go across the street because “all things were equal”, i.e., the location on his side of the road was mere convenience to the gas company, not necessity. Yes, the man was an attorney and it didn’t cost him anything.