I think there are a few things that can be considered American

Buttermilk pancakes, especially served with sausages and syrup
Clam chowder
Fried chicken with biscuits
Pecan pie
Mealoaf with mashed potato and creamy gravy
Philly cheesteak
Red velvet cake
PB&J
Turkey with yams covered in marshmallows
Grits

And fajitas and chow mein... apparently!