Interstate just didn't cut it!

Seriously, AA prints whatever the official name of the airport is, and whomever owns the airport (generally a city) makes up those silly appellations. However, to be called "international" an airport must have customs and immigration facilities. Not all the airports with customs and immigration facilities have scheduled international flights, so there might be some airports out there that call itself international but that have no airline flying outside of the country.

AA has nothing to do with this.