In the long term, letting leftists control borders will cost us our existence. In the short term, it is costing us our standard of living. Consider Britain:

So-called real GDP per head shrank by 0.3pc between April and June compared with a year earlier, the Office for National Statistics (ONS) said, suggesting living standards have slid backwards as the population grew.

It comes after net migration hit a near-record 685,000 last year.

The population is growing faster than the economy. This is because it is growing in terms not of more British people, but of more people who are not British and contribute less to the economy than British people would. To get an idea of how much less, look to the failed nations they leave behind.

On a tip from WDS 2.0.