openpolitics.com

Yes, it would be disruptive. But the potential gains are so vast that objectors could be bribed to let it happen

.. Workers become far more productive when they move from a poor country to a rich one. Suddenly, they can join a labour market with ample capital, efficient firms and a predictable legal system. Those who used to scrape a living from the soil with a wooden hoe start driving tractors. Those who once made mud bricks by hand start working with cranes and mechanical diggers. Those who cut hair find richer clients who tip better.

.. “Labour is the world’s most valuable commodity—yet thanks to strict immigration regulation, most of it goes to waste,” argue Bryan Caplan and Vipul Naik in “A radical case for open borders”.

.. The potential gains from open borders dwarf those of, say, completely free trade, let alone foreign aid.

.. the reason why migration is so attractive is that some countries are well-run and others, abysmally so.

.. Workers in rich countries earn more than those in poor countries partly because they are better educated but mostly because they live in societies that have, over many years, developed institutions that foster prosperity and peace. It is very hard to transfer Canadian institutions to Cambodia, but quite straightforward for a Cambodian family to fly to Canada. The quickest way to eliminate absolute poverty would be to allow people to leave the places where it persists. Their poverty would thus become more visible to citizens of the rich world—who would see many more Liberians and Bangladeshis waiting tables and stacking shelves—but much less severe.

.. Gallup, a pollster, estimated in 2013 that 630m people—about 13% of the world’s population—would migrate permanently if they could, and even more would move temporarily. Some 138m would settle in the United States, 42m in Britain and 29m in Saudi Arabia.

.. migration is, in the jargon, “path-dependent”. It starts with a trickle: the first person to move from country A to country B typically arrives in a place where no one speaks his language or knows the right way to cook noodles. But the second migrant—who may be his brother or cousin—has someone to show him around.

.. When the 1,000th migrant arrives, he finds a whole neighbourhood of his compatriots.

.. in America the foreign-born are only a fifth as likely to be incarcerated as the native-born. In some European countries, such as Sweden, migrants are more likely to get into trouble than locals, but this is mostly because they are more likely to be young and male.

.. Immigrants are more likely than the native-born to bring new ideas and start their own businesses, many of which hire locals. Overall, migrants are less likely than the native-born to be a drain on public finances, unless local laws make it impossible for them to work

.. A large influx of foreign workers may slightly depress the wages of locals with similar skills. But most immigrants have different skills. Foreign doctors and engineers ease skills shortages. Unskilled migrants care for babies or the elderly, thus freeing the native-born to do more lucrative work.

.. mass migration would make the world as a whole less crowded, since fertility among migrants quickly plunges until it is much closer to the norm of their host country than their country of origin.

.. If the worry is that future migrants might not pay their way, why not charge them more for visas, or make them pay extra taxes, or restrict their access to welfare benefits? Such levies could also be used to regulate the flow of migrants, thus avoiding big, sudden surges.

This sounds horribly discriminatory, and it is. But it is better for the migrants than the status quo, in which they are excluded from rich-world labour markets unless they pay tens of thousands of dollars to people-smugglers—and even then they must work in the shadows and are subject to sudden deportation.