No. State law does not impose a blanket requirement that a public
hearing be held prior to the adoption of every municipal ordinance.
Rather, state law imposes such a requirement only in specific instances.
For example, a public hearing must be held before a regulation which
amends a zoning ordinance is adopted. See. Wis. Stat. 62.23(7)(d)2.
Thus, public hearings are not required for all municipal ordinances
unless a local ordinance or rule imposes such a requirement.