Wis. Stat. § 906.13
A witness for the defense could be impeached by prior inconsistent statements to the district attorney even though made in the course of plea bargaining as to a related offense. Taylor v. State, 52 Wis. 2d 453, 190 N.W.2d 208 (1971). A statement by a defendant, not admissible as part of the prosecution's case because it was taken without the presence of the defendant's counsel, may be used on cross-examination for impeachment if the statement is trustworthy. Wold v. State, 57 Wis. 2d 344, 204 N.W.2d 482 (1973). A bright line test for determining whether a defendant's prior inconsistent statement is admissible for impeachment is whether it was compelled. State v. Pickett, 150 Wis. 2d 720, 442 N.W.2d 509 (Ct. App. 1989). This section is applicable in criminal cases. A defense investigator's reports of witness interviews are statements under sub. (1) but only must be disclosed if defense counsel has examined the witness concerning the statements made to the investigator. State v. Hereford, 195 Wis. 2d 1054, 537 N.W.2d 62 (Ct. App. 1995), 94-1596. A prior inconsistent statement is admissible under sub. (2) without first confronting the witness with that statement. Under sub. (2) (a) 2. and 3. extrinsic evidence of prior inconsistent statements is admissible if the witness has not been excused from giving further testimony in the case or if the interest of justice otherwise requires its admission. State v. Smith, 2002 WI App 118, 254 Wis. 2d 654, 648 N.W.2d 15, 01-1662. A video recording of a child's statement was inadmissible as a prior inconsistent statement under sub. (2) (a) when the requirements of s. 908.08 were not met. State v. Mercado, 2020 WI App 14, 391 Wis. 2d 304, 941 N.W.2d 835, 18-2419.