I say America should open its borders to them all. Every other country should do the same. But given America's illustrious open borders tradition, it is fitting that we lead the way. My case for open borders comes down to two claims: One moral, one empirical.
The moral claim: Immigration restrictions are unjust. Letting people work for willing employers and rent from willing landlords is not charity. It's basic decency. And even though foreigners wickedly chose the wrong parents, they're clearly people.
The empirical claim: Being just to foreigners would cost us less than nothing. When people immigrate here to work, they simultaneously enrich themselves and us. Though a high-skilled worker enriches us more than a low-skilled worker, the typical low-skilled worker is far better than nothing - and there's plenty of room for everyone.