Cities have majors, and in most cities, the major is the head of the local police.
Another View: There is NO SUCH title as the "Mayor of Law Enforcement!"
You are mixing your titles and/or understanding of the political and administrative makeup of municipalities and their police departments.
Political jurisdictions (villages, towns, municipalities, cities, etc) have MAYORS who are the political heads of the executive branch of local government.
Police Departments are headed by someone who (customarily) holds the title of CHIEF. The actual rank of the Chief of Police holds within his department is immaterial, but one thing is certain, he is never referred to as the "Mayor" of Police.
(in the US) that would be your local law enforcement agency. All law enforcement agencies in the US are tied with a nationwide computer system and they ALL draw upon the same database, which is NOT available to, or accessible by, the general public.
LEO'S make on average aywhere from $30,000(starting)-$60,000+ in a career depending on what agency and what part of law enforcement they work in and the added incentives.
The same way any law enforcement agency deals with crime: Find them, arrest them (and/or deadly force), try them in a court of law, administer justice (death, imprisonment, etc.). There are MORE different types of Law Enforcement Agencies in the US alone than there ever was in US history before. Today's law enforcement agencies have COMPUTERS, WEAPONS, and OVER-SEAS JURISDICTIONS. Today's law enforcement agencies also have the US MILITARY to assist them in law enforcement; this is "New", law enforcement did not have "official" military assistance prior to the 1990's.
Drug Enforcement Agency
It depends on the agency that employs the detective. In the US, almost all will, since they are law enforcement officers.
(in the US) There is no single pre-eminent, all-powerful, law enforcement body or agency in the United States. Therefore, it must be presumed that the question is asking about what federal agencies have nationwide police/law enforcement arrest powers to enforce CRIMINAL law ANYWHERE in the nation. I will omit attempting to list agencies and their agents who possess power to enforce CIVIL law as it wold apply to virtually EVERY federal agency within the executive branch. For the nationwide enforcement of CRIMINAL law - such a list might include (but is not limited to): the Federal Bureau of Investigation (FBI) - the US Secret Service - the US Marshall's Service - the US Park Police - Immigration and Customs Enforcement (ICE) - the US Border Patrol - the Bureau of Alcohol Tobacco and Firearms (ATF) - the US Postal Inspection Service - etc. This list is not all-inclusive and not all uniformed federal officers possess the same powers, even within the same agency (e.g.: Some Rangers of the US Forest Service are sworn law enforcement officers, but many are not). If another contributor can think of other agencies which qualify to be added to this list, their contribtuons are invited.
The US Secret Service is the US government agency nominally in charge of counterfeiting. It was originally part of the Treasury Department , but its role became one of crime-fighting and was expanded in 1901 to include protection of the President and government officials, for which it is now chiefly known. In 2003, the Secret Service was placed under the Department of Homeland Security.
Probably not. In the US, in MOST states, there is no registration of ordinary firearms by any government agency. In the states where there is, that information is restricted to law enforcement.
There are laws in EVERY state of the US governing this. Check with your local law enforcement agency for the laws of your particular state.
If you take into consideration the fact that the US Coast Guard is charged with enforcing the nations laws, then it would be THAT agency which began its life as the US Revenue Cutter Service.
Yes, FBI, CIA, NSA, US Coast Guard to some extent. they get involved in interstate crimes, etc.Added: To the list you may also add: the US Secret Service - The National Park Service - ICE - BATF - US Porder Patrol - actually . . . , any federal law enforcement agency who possesses the sworn authority to enforce federal criminal law.HOWEVER, the CIA is NOT among them. The CIA, by law, has no domestic law enforcement authority.
(in the US) virtually every law enforcement agency has a manual of procedures and rules that govern the actions of their officers when enforcing the laws of their particualr jurisdiction. These manuals should be available as "public documents" or you can access them with an FOIA request.