The Secret Service was established in 1865 to suppress the counterfeiting of U.S. currency. After the assassination of President William McKinley in 1901, the Secret Service was directed by Congress to protect the president of the United States. Today it is the Secret Service's responsibility to protect the following people: the president and vice president (also president-elect and vice president-elect) and their immediate families; former presidents and their spouses for 10 years after the president leaves office (spouses lose protection if they remarry; all former presidents up to and including President Obama receive lifetime protection, as this law changed in 1997); children of former presidents until they are 16 years old; visiting heads of foreign states or governments and their spouses traveling with them, along with other distinguished foreign visitors to the United States and their spouses traveling with them; official representatives of the United States who are performing special missions abroad; major presidential and vice-presidential candidates and, within 120 days of the general presidential election, their spouses.
- Airport Security Personnel
- Ambassadors
- Armored Truck Drivers
- Aviation Safety Inspectors
- Bail Bondsmen
- Bailiffs
- Bank Examiners
- Bodyguards
- Border Patrol Agents
- Bounty Hunters
- Campaign Workers
- Chief Information Security Officers
- City Managers
- Civil Engineers
- Congressional Aides
- Construction Inspectors
- Corrections Officers
- Court Interpreters and Translators
- Court Reporters
- Crime Analysts
- Criminal Lawyers
- Cryptographic Technicians
- Customs Officials
- Cybersecurity Architects
- Demographers
- Deputy U.S. Marshals
- Detectives
- Directors of Security
- Economists
- Emergency Management Directors
- Emergency Medical Technicians
- Emergency Services Dispatchers
- EPA Special Agents
- FBI Agents
- Federal and State Officials
- Fire Inspectors
- Fire Investigators
- Fire Protection Engineers
- Fire Safety Directors
- Fire Safety Technicians
- Firefighters
- Fish and Game Wardens
- Foreign Service Officers
- Forensic Experts
- Forensic Meteorologists
- Forest Fire Prevention Specialists
- Fraud Examiners, Investigators, and Analysts
- Futurists
- Genetic Genealogists
- Health and Regulatory Inspectors
- Intelligence Officers
- Internet Security Specialists
- Interpreters
- Judges
- Land Trust or Preserve Managers
- Lawyers
- Legal Nurse Consultants
- Legal Secretaries
- Lobbyists
- Locksmiths
- Loss Prevention Managers
- Military Recruiters
- Military Workers, Enlisted
- National Park Service Employees
- Occupational Safety and Health Workers
- Paralegals
- Park Rangers
- Parole Officers
- Personal Privacy Advisors
- Police Officers
- Policy Analysts
- Political Consultants
- Political Scientists
- Polygraph Examiners
- Press Secretaries
- Private Investigators
- Process Servers
- Recycling Coordinators
- Regional and Local Officials
- Security Consultants
- Security Guards
- Security Systems Installers and Workers
- Traffic Engineers
- Translators
- Transportation Planners
- Urban and Regional Planners
- Wildland Firefighters