Most NON-English speaking countries, specially in Latin America and Europe, refer to people from the USA as "Estadounidenses", "Etats-Uniens", etc. (United Statian) which is the right way to call them, because anyone who's born in the American Contienent, it's an American.
It's like if there was a country in Europe, named United States of Europe, and they auto call themselves "Europeans", anyone how lived in Europe would be an European, not just people from that country; in the same way, anyone who lives in America(s) is an American not just people from the USA.
Todos somos Americanos, desde Canada hasta Argentina, y los Estadounidences no tienen derecho de tomar nuestro nombre.
Where are all Americans, from Canada to Argentina, and the United Statians have no right to take our name.