Language and nation are not the same thing. Sadly, a policy like this would open up a can of worms. Should the Cherokee syllabary be permitted in .us domains?

Language and nation are not the same thing. Sadly, a policy like this would open up a can of worms. Should the Cherokee syllabary be permitted in .us domains? If so, you are still open to homograph spoofing against the Latin character set(e.g. Ꭹ for y or Ꭲ for T). If not, isn't it a trifle rude to declare that writing system "unamerican"? What about immigrant languages other than English? Why are Latin-charset language users more American than e.g. Hebrew ones like the long-standing and well-known Yiddish population of New York? You could ban mixing of code ranges in domains. That might help, but how do you sensibly restrict a code range? Turkish is a Latin charset language, but contains a few extra characters that pose a homograph risk. How do you work out whether a domain is Turkish (and allowed to contain ı) or not Turkish? Also, what if you wanted to differentiate the website for your California-based Yiddish-named restaurant from a similarly named competitor in New York? Should the governments of Morocco and Algeria be empowered to blanket-refuse Tifinagh domain names? What about when Georgia was part of Russia?