"Made in the USA" is an interesting subject. The truth is we live in a global economy where manufactures source parts from all around the world. Powerstroke engines are now assembled in mexico, Cummins uses parts made in Brazil, Duramax is an joint venture between gm and Isuzu. I owned a Nissan Titan prior to my F350. The year it was manufactured in Mississippi, it contained more american manufactured parts then the comparable Ram 1500.
In My opinion as far as making "American Made" a selling point, those customers that would make their decision based on what vehicles you drive will notice on their own, not needing it pointed out to them. Thus reducing the possibility of a confrontation.