Why would anyone want to insult the very country she claims to want to join?
Islam itself should be banned
For certain kinds of ceremonies yes, but for most I dont think security would be much of an issue.
We must respect other peoples cultures just as we want our own to be, if we want to ever have peace between us and the rest of the world. Yes there could be weapons hidden in clothing like niqabs, but, I could hide weapons easily with a jacket, or hoody, and I don't hear to many people trying to ban jackets.