No. In fact, Human Resources is often not involved in the final selection decision. The City's objective is to hire the best person for the position. Human Resources recruits, screens, and assists with testing applicants based upon the requirements for the position.
Because individual jobs differ, supervisors and managers in the department where the vacancy exists are in a better position to evaluate each candidate's suitability for the particular job. Human Resources may sit in on the interview process, provide feedback to the manager or supervisor and also meet with the final candidate to answer questions pertaining to benefits, policies, culture, etc.