I’ve heard that there are legal issues. Should be a lot of info on this board regarding this if you do a search for “legal” or “law” and “laws”.
You might also take a look at [url]http://www.firstamendment.com.[/url] I understand that Mr. Walters is an expert in this area of the law.
And a caveat: don’t rely on a message board for your legal advice. Not that the info here is bad; just that it shouldn’t be your primary source of legal info when you’re getting involved in a business function.