Wis. Stat. § 14.05
The governor may visit and inspect at any time any public institution of this state which is supported in whole or in part by appropriations by the state; and, in the case of state institutions, the governor may also cause an investigation to be made of any thereof, or of any matter connected with or of any employee in any such institution, and may appoint a suitable person therefor, and shall require a written report thereof. Such investigator shall be paid not to exceed $6.50 a day for each day actually and necessarily required in performing the duties imposed, and shall be reimbursed all actual expenses thereby incurred. The cost of any such investigation shall be charged to the appropriation for the state institution under investigation.
Wis. Stat. § 14.05