depend how you word the survey. basically though, the majority of americans I think are very much in favor of securing the borer, and view what is going on now as excessive and see us as being taken advantage of.
the true zealots (like Clinton and castro), who want to simply erase the borders entirely and shower citizenship and free stuff on literally as many people in the world who can get in, are a small minority..a very loud, very vocal minority, but still a minority.