Étatsunisien
There's an Op-Ed piece in today's Times by a couple of editors at Le Monde, "There's a Word For People Like You." The word, apparently about sixty years old and of Quebecois origin, is "Etats-Unisien," meaning not just américain but someone who comes from the home of the brave.
I first encountered this term a few years ago and fell in love with it. I may be an American, but I am very much not an étatsunisien. Greater New York is about the largest political entity that I'm willing to sign on to.
You have to love the echo of "Tunisian."