Tweet translation should be available through the API
Build a new request operator that can be included in an API request, and returns a translation of the Tweet text in the Tweet payload. Supported languages should be the same languages that are supported by the "lang:" request operator.
I think the ability to post in any additional supported language will be better. That way the default browser language will auto switch to a supported language if the author posted in it or enabled something to auto translate.
Right now I see public figures or authorities posting twice - one in english and then a follow ing one in spanish. If they had the author ability to write their message in many languages then the web app or API can group by either the default browser language or requested language.