Actually, they don't need to ask, they can make such a person persona non grata (which is where the term originates from [1]). Of course this almost never happ

Actually, they don't need to ask, they can make such a person persona non grata (which is where the term originates from [1]). Of course this almost never happens. [1]: https://en.wikipedia.org/wiki/Persona_non_grata https://en.wikipedia.org/wiki/Persona_non_grata