Wis. Stat. § 906.07 : —EVIDENCEEVIDENCE - WITNESSES — Who may impeach

The credibility of a witness may be attacked by any party, including the party calling the witness.

Wis. Stat. § 906.07

Sup. Ct. Order, 59 Wis. 2d R1, R169 (1973); 1991 a. 32.