Liberalising immigration would double the world's income overnight

A new paper from NBER suggests that a 116% increase in wages could result.

The Washington Post's Dylan Matthews reports on a new paper from the (US) National Bureau of Economic Research (£), which examines what would happen if all immigration restrictions were dropped.

Matthews summarises:

[University of Wisconsin’s John Keenan] builds a model that assumes that in the absence of restrictions, people will try to maximize income while still feeling some attachment to their native countries, and so some but not all workers will move to where their wages will be highest. He estimates that fully eliminating immigration restrictions worldwide would effectively double the world’s labor supply. This, unsurprisingly, leads to enormous economic growth, such that typical workers in developing countries would see annual wages more than double, from an average of $8,903 today to $19,272 with open borders. That is, the typical worker in the third world would end up making about double the individual poverty line in the United States today. Certain countries have even more astounding results; the typical Nigerian would see gains of $21,940.

The reasoning is simple; if people only move when they would increase their income, then liberalising migration can never make the world, as a whole, worse off.

Of course, the problem is that, as Keenan makes clear, the people who gain the most from those changes are the ones who have the least say in whether or not they actually occur:

Liberal immigration policies are politically unpopular. To a large extent, this is because the beneficiaries of these policies are not allowed to vote. It is also true, however, that the enormous benefits associated with open borders have not received much attention in the economics literature. Economists are generally enthusiastic about free trade. But if free movement of goods is important, then surely free movement of people is even more important.

Time for those places which do find immigration politically acceptable to have the power to push for it, maybe?

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Andy Burnham's full speech on attack: "Manchester is waking up to the most difficult of dawns"

"We are grieving today, but we are strong."

Following Monday night's terror attack on an Ariana Grande concert at the Manchester Arena, newly elected mayor of the city Andy Burnham, gave a speech outside Manchester Town Hall on Tuesday morning, the full text of which is below: 

After our darkest of nights, Manchester is today waking up to the most difficult of dawns. 

It’s hard to believe what has happened here in the last few hours and to put into words the shock, anger and hurt that we feel today.

These were children, young people and their families that those responsible chose to terrorise and kill.

This was an evil act. Our first thoughts are with the families of those killed and injured. And we will do whatever we can to support them.

We are grieving today, but we are strong. Today it will be business as usual as far as possible in our great city.

I want to thank the hundreds of police, fire and ambulance staff who worked throughout the night in the most difficult circumstances imaginable.

We have had messages of support from cities around the country and across the world, and we want to thank them for that.

But lastly I wanted to thank the people of Manchester. Even in the minute after the attack, they opened their doors to strangers and drove them away from danger.

They gave the best possible immediate response to those who seek to divide us and it will be that spirit of Manchester that will prevail and hold us together.

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