Privilege from arrest

A privilege extended to certain classes of persons, either by the rules of international law, the policy of the law, or the necessities of justice or of the administration of government, whereby they are exempted from arrest on, civil process, and, in some casesj on criminni charges, either permanently, as in the case of a foreign minister and his suite, or temporarily, as in the case of members of the legislature, parties and witnesses engaged in a particular suit, etc.