To the contrary, it reduces per capita income, unless they increase productivity. We don't have the productivity.
When California reduced the inflow of Mexican agricultural workers in the valley, everybody said it would kill California. Well, it didn't. Instead of tomatoes being picked by hand, they developed machines to pick the tomatoes. The tomatoes didn't taste as good as the ones they had before. What did they do? They genetically modified the tomatoes so they could stand being picked, and they tasted as good as the ones we had before.
That is—