I’ve noticed it’s popular in educational circles to teach about the presidency in terms of its primary roles (for example: Chief of State, Chief Executive, Chief Diplomat, etc.). How long has this been a recognized concept? Is it a totally illegitimate framework or is it illegitimate only to the extent to which the particular roles themselves are illegitimate? For example this page (http://www.scholastic.com/teachers/article/seven-roles-one-president) includes the role of Chief Guardian of the Economy. Ha.
Thanks for considering.