The Halacha is that a Jewish woman may not marry a convert of Amon and Moav. Is there any way to know who is a descendant of Amon and Moav today?
Are there any Jewish people alive today who can identify themselves as coming from a particular tribe?
The Christian "New Testament" claims Paul (Saul) was of the tribe of Benjamin. Since Roman times have there been any people who can validly claim they were from a particular tribe? At least at that ...