No, you solve the problem by treating face covering garments alike. Our store bans masks on Halloween. We have been known to ask people to remove face covering ski masks in winter. The niqab is no different. Separation of church and state means government is indifferent to religion. Orthodox Jewish women sometimes wear baggy coats and wigs to conceal their hair so it is not limited to Muslims by any means. The school NEEDS TO KNOW who is picking up the child. The clerk NEEDS TO KNOW who is buying alcohol (haram -forbidden- to Muslims btw).