Wis. Stat. § 54.986: Applicable law.

(1) Sections 54.950 to 54.988 apply to a transfer or declaration creating a custodial trust that refers to this subchapter if, at the time of the transfer or declaration, the transferor, beneficiary or custodial trustee is a resident of or has its principal place of business in this state or custodial trust property is located in this state. The custodial trust remains subject to this subchapter despite a later change in residence or principal place of business of the transferor, beneficiary or custodial trustee, or removal of the custodial trust property from this state.

(2) A transfer made pursuant to a law of another state substantially similar to this subchapter is governed by the law of that state and may be enforced in this state.