There are over thousands state, local and federal law enforcement agencies in the U.S. Each agency has many different positions and rolls that they take care of. This makes is a very large type of company if you were to look at it that way. AnswerParty on.
Law enforcement broadly refers to any system by which some members of society act in an organized manner to enforce the law by discovering and punishing persons who violate the rules and norms governing that society. Although the term may encompass entities such as courts and prisons, it is most frequently applied to those who directly engage in patrols or surveillance to dissuade and discover criminal activity, and those who investigate crimes and apprehend offenders. Furthermore, although law enforcement may be most concerned with the prevention and punishment of crimes, organizations exist to discourage a wide variety of non-criminal violations of rules and norms, effected through the imposition of less severe consequences.
Most law enforcement is conducted by some type of law enforcement agency, with the most typical agency fulfilling this role being the police. Societal investment in enforcement through such organizations can be massive, both in terms of the resources invested in the activity, and in the number of people professionally engaged to perform those functions.
National security is the requirement to maintain the survival of the state through the use of economic power, diplomacy, power projection and political power. The concept developed mostly in the United States after World War II. Initially focusing on military might, it now encompasses a broad range of facets, all of which impinge on the non military or economic security of the nation and the values espoused by the national society. Accordingly, in order to possess national security, a nation needs to possess economic security, energy security, environmental security, etc. Security threats involve not only conventional foes such as other nation-states but also non-state actors such as violent non-state actors, narcotic cartels, multinational corporations and non-governmental organisations; some authorities include natural disasters and events causing severe environmental damage in this category.
Measures taken to ensure national security include: Security
Crime prevention is the attempt to reduce deter crime and criminals. It is applied specifically to efforts made by governments to reduce crime, enforce the law, and maintain criminal justice.
Criminologists such as Gottfredson, McKenzie, Eck, Farrington, Sherman, Waller and others have been at the forefront of analyzing what works to prevent crime. Prestigious commissions and research bodies, such as the World Health Organization, United Nations, the United States National Research Council, the UK Audit Commission and so on, have analyzed their and others' research on what lowers rates of interpersonal crime.
In North American English, a law enforcement agency (LEA) is a government agency responsible for the enforcement of the laws.
Outside North America, such organizations are called police services. In North America, some of these services are called police while others have other names (e.g. sheriff's department; investigative police services in the United States are often called bureaus (e.g. FBI, USMS, ICE, CBP, ATF, DEA, USSS etc.)). Police
In the United States, a sheriff is a county official and is typically the top law enforcement officer of a county. Historically, the sheriff was also commander of the militia in that county. Distinctive to law enforcement in the United States, sheriffs are usually elected. The political election of a person to serve as a police leader is an almost uniquely American tradition. (The Honorary Police of Jersey, a British Crown Dependency in the Channel Islands, have been elected since at least the 16th century.)
The law enforcement agency headed by a sheriff is typically referred to as a sheriff's office. According to the National Sheriffs' Association (an American sheriff's advocacy group founded in 1940), there were 3,085 sheriff's offices and departments as of the end of 2008. These range in size from very small (one- or two-member) forces in sparsely populated rural areas to large, full-service law enforcement agencies, such as the Los Angeles County Sheriff's Department, which is the largest sheriff's office and the seventh largest law enforcement agency in the United States, with 16,400 members and 400 reserve deputies. The average sheriff's department in the United States employs 24.5 sworn officers.
Law enforcement in the United States is one of three major components of the criminal justice system of the United States, along with courts and corrections. Although each component operates semi-independently, the three collectively form a chain leading from investigation of suspected criminal activity to administration of criminal punishment. Also, courts are vested with the power to make legal determinations regarding the conduct of the other two components.
Law enforcement operates primarily through governmental police agencies. The law-enforcement purposes of these agencies are the investigation of suspected criminal activity, referral of the results of investigations to the courts, and the temporary detention of suspected criminals pending judicial action. Law enforcement agencies, to varying degrees at different levels of government and in different 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 Crime
The United States of America (USA), commonly referred to as the United States (US), America, or simply the States, is a federal republic consisting of 50 states, 16 territories, a federal district, and various overseas extraterritorial jurisdictions. The 48 contiguous states and the federal district of Washington, D.C., are in central North America between Canada and Mexico. The state of Alaska is the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific. The country also has five populated and nine unpopulated territories in the Pacific and the Caribbean. At 3.79 million square miles (9.83 million km2) in total and with around 316 million people, the United States is the fourth-largest country by total area and third largest by population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The geography and climate of the United States is also extremely diverse, and it is home to a wide variety of wildlife.
Paleo-indians migrated from Asia to what is now the US mainland around 15,000 years ago, with European colonization beginning in the 16th century. The United States emerged from 13 British colonies located along the Atlantic seaboard. Disputes between Great Britain and these colonies led to the American Revolution. On July 4, 1776, delegates from the 13 colonies unanimously issued the Declaration of Independence. The ensuing war ended in 1783 with the recognition of independence of the United States from the Kingdom of Great Britain, and was the first successful war of independence against a European colonial empire. The current Constitution was adopted on September 17, 1787. The first 10 amendments, collectively named the Bill of Rights, were ratified in 1791 and guarantee many fundamental civil rights and freedoms.