Finding that threshold level (and a way to express it) where people are let in IFF they provide more value than they cost to a society over the entire duration of their stay is definitely not an easy circle to square, and it does get made into some stupid black and white dichotomy by most commentators.

It reminds me of the idiots that were smugly asking leaders during the COVID scare "how many deaths are acceptable?" as if anyone at all dying of disease is grounds to completely halt an economy.

Sophists, the lot of them.