okay, but 8 of the top 10 shareholders (and four of the top four) in Rolls-Royce Holdings Plc are American. I'm not really sure "ain't a subsidiary" is quite what you make of it. I was incorrect, but i hedged, i guessed that the aircraft engine parts wasn't owned by ford, but i was not sure.
in the context of this discussion, if all american investors pulled out of Rolls-Royce Holdings Plc because they were tasked with copying an american engine... could Rolls-Royce Holdings Plc make that engine?
This is what american isolationism means and will look like.