apparently there are some states laws that do not allow anything other than the 26 letters of the alphabet (it was stated this is a limitation imposed in California law). Whether those would be enforceable if challenged is a another question altogether but unless somebody wants to challenge them, the current laws are what the state will impose.
Here is a link to a paper written by a Prof on the subject:
http://papers.ssrn.com/sol3/papers.c...act_id=1747858
so mastabruce: what do you do with diacriticals such as acutes, graves, umlauts, and the many others that are an actual part of the name?

