The point was that Western civilization was open to ideas from outside the West and that's why the West has succeeded. The Chinese had movable type presses, the Muslims had algebra - but they didn't do anything with it in large part because they thought no one else on earth had anything to teach them and they were the center of the world. And both civilizations crashed to the ground.
You've made ~50 posts on this thread.
Do you see a problem with current US immigration enforcement, and if so, what exactly is your solution?