French weekly VSD reports that French citizens who want to get married to foreign women from North Africa find themselves in a bizarre situation. According to French law, the latter need to provide a document from their embassy that they're free to marry. But the embassies only provide this document if the French spouse converts to Islam. This mean that, by proxy, the French authorities are imposing Muslim conversion on French citizens.
Malika Sorel, a member of the High Council of Integration, explained to the the Atlantico news-site that the French authorities have to verify that the foreigner wishing to marry is not already married. It is the Muslim countries who are forcing the French citizens to convert, not France. If the French authorities forgo the required legal documents, you'll have exposes about the increase in polygamous marriages.