Until a few years ago, America seemed relatively resistant to the kind of homegrown Islamist terrorism that has plagued Europe for the last decade. Terrorism experts attribute the resilience of American Muslims to their greater integration into society. In Europe, immigrant populations tend to cluster—with Algerians settling in France, Turks in Germany, Moroccans in the Netherlands, and so on, making it easier for ethno-religious groups to remain isolated, spending time only with others like themselves.
Many Muslim immigrants in Europe arrived as unskilled guest workers, and changes in the labor market have made it hard for them to find jobs. Muslims in Europe are far more likely to be unemployed and to receive lower pay for the same work than "native" Europeans. Thus, Muslim immigrants in Europe are often impoverished. For example, 10 percent of native Belgians live below the poverty line—meanwhile, 59 percent of Belgium Turks and 56 percent of Belgium Moroccan are living in poverty.