positive vetting
noun/ˌpɒzətɪv ˈvetɪŋ/
/ˌpɑːzətɪv ˈvetɪŋ/
[uncountable, countable] (British English)- the process of checking everything about a person’s background and character when they apply for a job in which they will have to deal with secret information, especially in the civil service
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positive vetting