§ 30. Legislative power. The legislative power of the city is vested
in the common council thereof, and it has authority to enact ordinances,
not inconsistent with law, for the government of the city and the
management of its business, for the preservation of good order, peace
and health, for the safety and welfare of its inhabitants and the
protection and security of their property; and its authority, except as
otherwise provided in this chapter, or by law, is legislative only.