The supposed economic case for mass immigration has finally collapsed, writes Sam Ashworth-Hayes in the Telegraph, as a new report from the Institute for Fiscal Studies confirms what many have been saying for decades: bringing in millions of low-pay workers and their families can never make a country richer. Here’s an excerpt.

It was a delightful theory. Opening Britain’s borders would bring an influx of human capital that would leave the country richer, the tax burden lower, public services stronger and our culture enriched. And, as a theory, it had the great benefit of being all but impossible to falsify unless someone was daft enough to actually try it in practice.

Unfortunately, thanks to the Conservatives, this has now happened. And the resulting confrontation with reality has demolished a truly beautiful idea. Report after report, dataset after dataset, is hammering home a simple message: mass migration is not making Britain better off.