Answer:
a violation of procedural due process requirements
Step-by-step explanation:
Hearing a case involving legal matters should be done fairly and impartially. For this reason, these hearings should be made by a professional, a judge, who will act impartially between the two parties, assessing and interpreting the case based on legislation and not with secondary interests. In the case set out in the question above, if the mayor of the city acts as a judge at the hearing, this will violate the procedural requirements of due process of law. This is because even if the mayor is a judge, there is no guarantee that he will act impartially, in which case we can say that if the mayor is the judge, the process will not be concluded fairly.