This is simply not accurate. The US was historically and is currently built by accepting poor immigrants. As the famous poem by Emma Lazarus says, "Give me your tired, your poor, Your huddled masses yearning to breathe free".
The US is and always has been a place where the poorest can make something for themselves. No matter what rhetoric you spout, this is still demonstrably true: 40 million Americans are first generation immigrants. Another 40 million second generation.
So when I, as an American, see these heavy restrictions, it highlights a couple things for me:
1) Just how different US immigration culture is from anywhere else. And how despite all the anti-US rhetoric, all the political nonsense, we are still the most welcoming place in the world for immigrants, and it isn't even close.
2) How unwilling other nations are to provide opportunities for people outside their borders. I want to go a little further and say these nations don't have much interest in being a part of the world if they can't exploit it.