In the USA, as in most of the world, there is NO requirement that all engineers have a degree or license. There are job titles that do require such a license, and they are listed in the Professional Engineers Act. They include:
"Professional Engineer", "Registered Engineer", "Licensed Engineer", "PE", "P.E." "Professional Electrical Engineer", "Registered Electrical Engineer", "Licensed Electrical Engineer",
Job titles that, according to the Professional Engineers Act, require no license and have no educational requirements include"
"Electrical Engineer", "Electronics Engineer", "Electronic Engineer", "Engineering Consultant"
See Chapter 7 of Division 3 of the Business and Professions (B&P) Code, sections 6700-6799.
For California, see Sections 400-474.5 of Title 16, Chapter 5 of the California Code of Regulations (CCR). Many US states use identical language in their laws.
Wikipedia has a good overview with links to authoritative sources: [
Also see [
(As always with Wikipedia articles, it is the references that make something authoritative or not authoritative.)