Montana Title 5. Legislative Branch § 5-5-112. Immunity of witness

(1) A person sworn and examined before either house of the legislature or any committee of the legislature may not be held to answer criminally or be subject to any penalty or forfeiture for any fact or act relating to the required testimony. A statement made or paper produced by the witness is not competent evidence in any criminal proceeding against the witness.

(2) A witness cannot refuse to testify to any fact or to produce any paper concerning which the witness is examined for the reason that the witness's testimony or the production of the paper tends to disgrace the witness or render the witness infamous.

(3) This section does not exempt a witness from prosecution and punishment for perjury committed by the witness during the examination.