Wis. Stat. § 59.30: Not to act as attorney.

No sheriff, undersheriff, deputy, coroner or medical examiner shall appear or practice as an attorney in any court, draw or fill up any writ, pleading or proceeding for a party in any action, nor, with the intent to be employed in the collection of any demand or the service of any process, advise or counsel any person to commence an action or proceeding; and for violation of this section every such officer shall forfeit not more than $50.