Wisconsin Statutes Criminal Procedure (Ch. 967 to 980) § 971.02. Preliminary examination; when prerequisite to an information or indictment

(1) If the defendant is charged with a felony in any complaint, including a complaint issued under s. 968.26, or when the defendant has been returned to this state for prosecution through extradition proceedings under ch. 976, or any indictment, no information or indictment shall be filed until the defendant has had a preliminary examination, unless the defendant waives such examination in writing or in open court or unless the defendant is a corporation or limited liability company. The omission of the preliminary examination shall not invalidate any information unless the defendant moves to dismiss prior to the entry of a plea.

(2) Upon motion and for cause shown, the trial court may remand the case for a preliminary examination. “Cause” means: