Question: what are the formal and informal qualifications necessary to become president?
Answer:  Must be at least 35 years old 1981 1980 Mr. Sea.  Must be a Natural-Born Citizen “No Person Except a Natural Born Citizen…” “ Naturalized” “Natural Born Citizen” August 5, 1961. ...   Must have lived in the U.S. for at least 14 years “14 Years a Resident Within These United States” “Natural Born Citizen” Jefferson.