Updated Austin, Texas
Samuel, great question as the role of the cop is ever evolving. What started out as a typical "chasing bad guys" job has evolved into an officer being a chameleon of sorts. As a Patrol Officer you are expected to respond to calls, assist with investigations, be a mediator in disputes, or just be an ambassador of your area. As a patrolman I did my fair share of report writing as most if not all calls that you respond to require documentation of sorts. INS agents have always been police officers with arrest authority. Most local police departments do NOT enforce INS duties as INS arrest authorities have Federal arrest authority and local police officers only have state and county arrest authority.
Updated Wichita, Kansas
The duties of a police officer, also known as a law enforcement officer, focus on protecting people and property. They patrol the areas they are assigned, which sometimes include entire jurisdictions, respond to calls, enforce laws, make arrests, issue citations, and occasionally testify in court cases. They often make traffic stops, respond to domestic disturbances, and, at times, provide first aid to someone involved in a traffic accident or injured in a domestic dispute until paramedics arrive. Much of their time is divided between patrolling, writing reports, and filling out forms. In fact, police officers now also perform the immigration duties once exclusive to INS agents, meaning that INS agents are now essentially police officers. Resources: http://www.criminaljusticeusa.com/police-officer/ https://fayettevillenc.gov/government/city-departments/police/recruiting/requirements-hiring-process