High Quality Content by WIKIPEDIA articles! A law enforcement officer (also called peace officer), in North America, is any public-sector employee or agent whose duties involve the enforcement of laws. The phrase can include police officers, prison officers, customs officers, immigration officers, bailiffs, probation officers, parole officers, auxiliary officers, and sheriffs, marshals, and their deputies. Security guards are not normally law enforcement officers, unless they have been granted powers to enforce particular laws, such as those accredited under a Community Safety Accreditation Scheme.