This is pretty simplistic though considering that a lot of TV work can be shot indoors on sound stages and outdoor shots where a recognizably American settings

This is pretty simplistic though considering that a lot of TV work can be shot indoors on sound stages and outdoor shots where a recognizably American settings are needed can be shot in the US. There's no reason at all that a show needs to be filmed entirely in one location. I live in Prague and there's a huge movie industry with lots of American movies being shot on sound stages here. To give one example off the top of my head, all of the Narnia movies were shot here.