Law enforcement in the United States
As of 2020, more than 800,000 sworn law enforcement officers have been serving in the United States. About 137,000 of those officers work for federal law enforcement agencies.[1]
Law enforcement operates primarily through governmental police agencies. There are 17,985 police agencies in the United States which include local police departments, county sheriff's offices, state troopers, and federal law enforcement agencies. The law enforcement purposes of these agencies are the investigation of suspected criminal activity, referral of the results of investigations to state or federal prosecutors, and the temporary detention of suspected criminals pending judicial action. Law enforcement agencies, are also commonly charged with the responsibilities of deterring criminal activity and preventing the successful commission of crimes in progress. Other duties may include the service and enforcement of warrants, writs, and other orders of the courts.
Law enforcement agencies are also involved in providing first response to emergencies and other threats to public safety; the protection of certain public facilities and infrastructure, such as private property; the maintenance of public order; the protection of public officials; and the operation of some detention facilities (usually at the local level).
Nearly all U.S. states and the federal government have by law adopted minimum-standard standardized training requirements for all officers with powers of arrest within the state. Many standards apply to in-service training as well as entry-level training, particularly in the use of firearms, with periodic re-certification required. These standards often comply with standards promoted by the US Department of Justice and typically require a thorough background check that potential police recruits must take.
A typical set of criteria dictates that they must:[98][99][100]
Repeated interviews, written tests, medical examinations, physical fitness tests, comprehensive background investigations, fingerprinting, drug testing, a police oral board interview, a polygraph examination, and a consultation with a psychologist are common practices used to review the suitability of candidates. Recruiting in most departments is competitive, with more suitable and desirable candidates accepted over lesser ones, and failure to meet some minimum standards disqualifying a candidate entirely. Police oral boards are the most subjective part of the process and often disqualifies the biggest portion of qualified candidates.[101] Departments maintain records of past applicants under review, and refer to them in the case of either reapplication or requests between other agencies.
Related:
General: