`:We use the nationality held at the time the subject became notable in the lead sentence. Thus the lead sentence should read ``American``, as should nationality in the infobox. This is precisely why there is also a citizenship field in the infobox, for changes of citizenship, so that field should read ``British``. This has all been done and is a good solution. We specifically don't use hyphenated or phrases like ``American-born British`` in the lead sentence, see WP:OPENPARA.     `