A committee of the House of Lords in Great Britain has been examining the economic impact of immigration for a few months. The Lords have spoken and the words sound familiar:
Whenever a minister is asked about high levels of immigration, the same answer is trotted out: migrants boost the economy, fill jobs that Britons cannot or will not do, and pay taxes that benefit the exchequer...
Yet an inquiry by a House of Lords committee into the economic impact of immigration - which I chaired, and reports today - found fundamental flaws in these claims. We found no evidence that net immigration (immigration minus emigration) generates significant economic benefits for the existing UK population.
The government told the inquiry that migrants contributed £6bn to Britain's GDP in 2006. Sounds great, but it's completely meaningless...the key measure of a country's standard of living is GDP per head, not total GDP. In percentage terms, immigration has increased Britain's population almost in step with the impact on GDP. So the effect on GDP per head has been roughly zero.
...Surely immigration is needed for jobs Britons refuse to do, the government argues. But they refuse to do these jobs only at current pay rates. In many cases, higher wages - never popular with employers - could solve the "shortage". In other cases increased mechanisation could bypass the need for migrant labour. Many employers today rely on the skills and hard work of migrants. But in the longer run, when wages can be increased and production methods changed, there is no valid argument for continued high net immigration.
Related to this is the effect on wages. While immigration was found to deliver a small gain in the wages of the highly paid, it has a slightly negative effect on the wages of the lowest paid, as many migrants compete for relatively low-skilled jobs. Any negative effect for people earning little more than the minimum wage must be taken seriously.
Let's see: (1) the net benefits from immigration to the pre-existing population are trivially small and (2) immigration redistributes wealth, and low-skill workers end up on the losing end. Where have I heard all this before?
(Here is a pdf of the report).

