I do not have a fence or a wall. The one time I did it was to keep things in, not keep things out.
Besides, it is a stupid comparison for two reason. First, something that might work on a small scale does not always do so on a large one. Second, people are not coming on to my property legally and then staying too long.
I do badmouth illegals, I just do not choose to use racist lingo as you do. That is not really my thing. And I am 100% for aggressive iCE raids of businesses, as long as the businesses are being punished along with the workers.