A generous policy would be to make the process simple for individuals that are able to work and contribute on their own. That is not the case.
I don’t think people truly appreciate the sheer number of people who are trying to emigrate. If I may, which European country do you belong to? I invite you to compare your own nation’s legal emigration numbers and procedures to that of the US. I suspect you’ll find that the barrier to entry is even higher.
As for generosity, here is some information from Wikipedia: “In absolute numbers, the United States has by far the highest number of immigrants in the world, with 50,661,149 people as of 2019.[1][2] This represents 19.1% of the 244 million international migrants worldwide, and 14.4% of the United States' population.”
https://en.wikipedia.org/wiki/Immigration_to_the_United_Stat...
• The US has too few people.
• The US has too many people.
If the former, we should increase immigration beyond whatever the current levels are.
If the latter, population decline obviously isn't a concern.
Which of these universes do we live in? It can't be both.