How the fuck is the country supposed to absorb all this with open borders?
And that just proves how pathetically stupid you are.
Did you even pay a tiny bit of attention in grammar school?
The USA had "open borders" for nearly 200 years. Where do you think our population of 300+ million came from? They sure as Hell didn't descend from a handful of settlers that came here on the Mayflower.
They came from every country on earth, were welcomed here, raised families. Just as YOUR ancestors did.
Your ignorance of the history of your own country is disgraceful, and you are living proof that our educational system needs some serious work. And you need to do the world a favor by sticking your head in the nearest toilet and pushing flush