See: https://www.openstreetmap.org/relation/1206310
name:en=Lake Ontario
vs.
official_name:en-US=Lake America
name:en=Lake Ontario
vs.
official_name:en-US=Lake America
(Google Translate from "Satan's armpit").
I mean, if temper tantrums by the supreme executive are allowed and all.
And while he's at it, Georgia could become Trumpia to avoid confusion with the nation of the same name. (Why even do you have a state named after the granddad of the king you fought off?)
But I guess those might accidentally be useful, so of course he's not going to do them. :P
[1]: https://taginfo.openstreetmap.org/keys/official_name#overvie...
Thankfully, North Korea's antics doesn't matter, because nobody is trying to sell map service to North Koreans anyway.