Eh it's not as black and white as you make it look. Colleague of mine is in ICE detention, because ICE acted on courts being held up in appeals so they can ignore his ongoing asylum case and deport him back to Russia. He followed the rules, had a work permit and everything, but did not matter in the end.
The green card interview snatching is also messed up, if your existing visa expired, while you were being processed, USCIS was understanding and it did not affect your application. (Processing time is slow, so that can happen). Now it's if your visa ever expires your Freiwild for ICE. They're technically not wrong with this, but they're essentially throwing the book at people getting a visum legally too.
That doesn't contradict what I'm saying. They aren't going to do anything that might depress the economy—it's just a sufficient cruelty to satisfy their base.
As I said, the United States is very welcoming to foreigners who are willing to follow the laws.