After being nominated for an ambassadorship by the president, nominees are confirmed by the Senate. Positions with the Foreign Service are rotational, so the length of an ambassador's term varies. Most ambassadors only serve a few years with an embassy. After leaving a post, they may go on to serve as ambassador at a U.S. embassy in another country. Some career ambassadors spend several years moving from embassy to embassy. Many ambassadors have published books on foreign policy, international affairs, and world trade.
- Aviation Safety Inspectors
- Bailiffs
- Bank Examiners
- Border Patrol Agents
- Campaign Workers
- Citizenship Reclamation Specialists
- City Managers
- Civil Engineers
- Congressional Aides
- Construction Inspectors
- Cryptographic Technicians
- Cultural Advisers
- Customs Brokers
- Customs Officials
- Demographers
- Deputy U.S. Marshals
- Economists
- Emergency Management Directors
- Environmental Lobbyists
- Environmental Planners
- EPA Special Agents
- Export-Import Specialists
- FBI Agents
- Federal and State Officials
- Fish and Game Wardens
- Foreign Service Officers
- Fraud Examiners, Investigators, and Analysts
- Futurists
- Health and Regulatory Inspectors
- Intelligence Officers
- Internet Transaction Specialists
- Interpreters
- Land Acquisition Professionals
- Land Trust or Preserve Managers
- Lobbyists
- Localization Specialists
- Management Analysts and Consultants
- Merchant Mariners
- Military Recruiters
- Military Workers, Enlisted
- National Park Service Employees
- Occupational Safety and Health Workers
- Park Rangers
- Policy Analysts
- Political Columnists and Writers
- Political Consultants
- Political Reporters
- Political Scientists
- Political Speechwriters
- Press Secretaries
- Public Opinion Researchers
- Purchasing Agents
- Recycling Coordinators
- Regional and Local Officials
- Secret Service Special Agents
- Statisticians
- Traffic Engineers
- Translators
- Transportation Planners
- Urban and Regional Planners