Foreign laws may be proved by parol evidence; but if it shall appear that the law in question is contained in a written statute or code the court may reject any evidence of such law that is not accompanied by a copy thereof.
Wis. Stat. § 889.06
Foreign laws may be proved by parol evidence; but if it shall appear that the law in question is contained in a written statute or code the court may reject any evidence of such law that is not accompanied by a copy thereof.
Wis. Stat. § 889.06