Is Persona Non Grata?

In diplomacy, a persona non grata (Latin: "person not welcome", plural: personae non gratae) is a status sometimes applied by a host country to foreign diplomats to remove their protection by diplomatic immunity from arrest and other normal kinds of prosecution.

What does the expression persona non grata mean?

: a person who is unacceptable or unwelcome Luis Villoro is hardly a persona non grata. As he approaches the age of eighty, his position in the intelligentsia is secure.—

Is persona non grata a crime?

Persona non grata (Latin, plural: personae non gratae), literally meaning "an unwelcome person", is a legal term used in diplomacy that indicates a proscription against a foreign person entering or remaining in the country.