Wis. Stat. § 769.303: Application of law of this state.

Except as otherwise provided by this chapter, a responding tribunal of this state shall do all of the following:

(1) Apply the procedural and substantive law, including the rules on choice of law, generally applicable to similar proceedings originating in this state and may exercise all powers and provide all remedies available in those proceedings.

(2) Determine the duty of support and the amount payable in accordance with the law and support guidelines of this state.