I lived in Nevada and the landlord used to complain every day about all the illegals in the area. I got frustrated with her one day and stated if you stop employing them to paint, do yard work, and cook they would all leave or at least stop coming here.
Farmers need some method to get folks willing to help to the farms, that system has to be in place along side the other ones.
Once the Nancy pelosi's and others employing them as maids and gardeners get fined and put in prison this will end. You will never stop this with drones or guns. Stop the Money and you stop the problem. At this point in time, I'd jump the fence and take the chance just like they are in their positions.
Taking a vacation to america to have a baby has to end also. Its an archaic method that has to stop.