Standard American English is a misnomer. There is no body or authority which governs any form of standardized form of American English.

Relevant related articles include:

United States

• American English, the set of varieties of English spoken in the United States
• General American English, a generalized variety or accent, representing a continuum of natural accents spoken across the United States

Standard English

• Standard English, covers the topic of the national norms in major English-speaking countries