I don't think that would work. The brown hoards already have to step over the bodies of their fallen. The deserts of south Texas are littered with bodies of the ignorant who think they can walk to San Antonio or Dallas through the desert with one gallon of water and no food.We don't need a border fence ,we need snipers and landmines. Poko might just think twice about invading if he had to step over the pieces of hector and gomez left in the desert.
The ranchers used to shoot them for the damage they do. Cut a hole in the bottom of a water tank, drink their fill and then the tank runs the rest of the water out on the ground. If they get caught with no food they butcher a cow or two taking the prime cuts and leaving the rest for the buzzards.
These people are 3rd world types and have little common sense. They are a draw on the US and that is about the only thing they do well--other than have anchor babies.
It needs to stop now if we are to survive.