Good luck fighting this fight here, though. It's like arguing that Star Trek is good on a Star Wars fanfic forum. They're just not ready to hear that.
And there's nothing wrong with that. They just need to be honest about it and not claim that we are doomed if we don't accept foreign students. We have lots of very smart, creative and motivated people in the US. We don't need to import them.
In fact, one could argue that our national interests are better served by improving our educational system (K-12 and beyond) in order to ensure that we produce better, smarter, more motivated and entrepreneurial people than anyone else in the world. If it is true that we need immigrants because we don't have them here then we have a serious problem that needs to be addressed at a national level. In other words, we are under-serving whole generations of students all the way down to K-12.