[KyleGoetz]

So it really seems we all agree: It's technically possible to have a kanji version of your name. It just may be counterproductive unless your name is Ken (shortened version of Kenneth) and you take a name like 健.

Am I missing something here? I mean, there is a Japanese citizen from the US whose first name in English is David, and his Japanese name contains 出人 (debito, legally). At one point his legal Japanese name was registered as 菅原有道出人 (すがわら　あるどうでびと) because he married a Sugawara and they wanted their kids to have a Japanese surname. So it's legally possible and practically possible (he goes by the first name 出人 in Japan).