7-3-4320. Role of mayor. The mayor is the presiding officer, except that in the mayor's absence, a president pro tempore may be chosen. The mayor shall exercise the powers conferred and perform all duties imposed upon the mayor by part 44 and this part, the ordinances of the municipality, and the laws of the state, except that the mayor may not veto any measure. The mayor must be recognized as the official head of the municipality by the courts for the purpose of serving civil processes, by the governor for the purposes of the military law, and for all ceremonial purposes.