nA witness compelled to give incriminating testimony receives use
immunity (i.e., the testimony given cannot be used against the witness).
nIn some states a witness who testifies under a grant of immunity is given transactional
immunity, which protects a witness from prosecution for any activity mentioned in the witnessís testimony.
nAt the state level such authority is generally vested in
the chief prosecuting officer (i.e.,
the district or state attorney).
nUnder international law, a person who has diplomatic status and serves as a part of a diplomatic mission, as well as members of the diplomatís staff and household, is immune from arrest and prosecution, thus enjoying diplomatic immunity.