Transnational marriage, generally between cousins or other relatives, is a key driver of failed Muslim assimilation in Europe. Christopher Caldwell recently had an excellent article on the phenomenon in Germany. Now Germany has taken action, passing legislation that requires foreign spouses to speak basic German, and to have financial means to support themselves. The new law is beginning to bite, and several important Muslim groups in Germany are not happy about it. They are boycotting Germany’s second national “integration summit” in protest of the changes. That is unfortunate, but ultimately a sign that the government has done the right thing. Denmark has already passed legislation to make transnational cousin marriages more difficult, and France and Britain are considering similar measures. It’s a generation too late, but better late than never most certainly applies. Slowly, Europe is waking up.