“Krugman’s failure to relate the European model to Europe’s Muslim problem is telling. To point to the upside of Europe’s social model without mentioning the most serious downside is to provide bad advice to our own policymakers. The assimilation of immigrants by the United States, compared to the inability of the European nations to assimilate them–with potentially catastrophic results for those nations–is not unrelated to the differences between economic regulation in the United States and Europe. Because the U.S. does not have a generous safety net–because it is still a nation in which the risk of economic failure is significant–it tends to attract immigrants who have values conducive to upward economic mobility, including a willingness to conform to the customs and attitudes of their new country. And because the U.S. does not have employment laws that discourage new hiring or restrict labor mobility (geographical or occupational), immigrants can compete for jobs on terms of substantial equality with the existing population. Given the highly competitive character of the U.S. economy, in contrast to the economies of Europe, employers cannot afford to discriminate against able workers merely because they are foreign and perhaps do not yet have a good command of English. By the second generation, most immigrant families are fully assimilated, whatever their religious beliefs or ethnic origins”. –Richard Posner, discussing the differences between the U.S. Economic model and the European economic model with regard to immigrants, specifically Muslim immigrants, over at the Becker-Posner blog