Interesting issue, one that has been vaguely mirrored here in some legislation in California and other places, either denying benefits or forcing immigrants to meet certain expectations for 'getting' by in our immigrant-based society. The ever-tolerant French have gone one step further in marginalizing their immigrant population by mandating that observant Islamic girls/women can not wear their traditional headscarves in public schools. As a sop to someone, I'm not sure who, they have also forbade the wearing of Jewish skullcaps and Christian symbols (crucifixes) as well. But...small Stars-of-David and Crosses are OK.

Warning that growing ethnic and religious divisions threaten to erode France's tradition of equality, President Jacques Chirac called Wednesday for a law that would ban Muslim head scarves and all other overt religious symbols from public schools.
...
"The Islamic veil, whatever name it is given, the kippa [the Jewish skullcap] or the cross, if of manifestly excessive dimensions, don't have a place within the walls of public schools," Chirac said. Small, discreet signs, such as tiny crosses or Stars of David, should be allowed, he said.