Wis. Stat. § 906.01
General rule of competency.
Every person is competent to be a witness except as otherwise provided in these rules.
History: Sup. Ct. Order, 59 Wis. 2d R1, R157 (1973); Sup. Ct. Order No. 16-01, 2017 WI 13, 373 Wis. 2d xiii.
Wis. Stat. § 906.01