Comment by cousin_it

Whoa there. What's wrong with "undercutting labor markets"? Last I heard, when a profession (e.g. doctors) decides to limit the number of practicioners in order to charge a higher price to the public, that's a bad thing. It benefits the people currently employed in that profession now, but it hurts others who wants to join, and it hurts the public who wants to get the service (e.g. healthcare). The sum of hurt is greater than the sum of help. Cartels are harmful; they don't stop being harmful just because there are borders involved.

I mean, it's one thing if you think immigrants commit more crimes or use more taxpayer money. These are both false, but at least the argument could hypothetically work. But if you say that even perfectly law-abiding, non-welfare-using, good-work-performing hypothetical immigrants shouldn't be allowed in because they would "undercut labor markets", that's plain nonsense. Such nice hypothetical immigrants should be invited in large numbers and everyone would win from it.