There is no such thing as a car made 100% in the USA. In fact it kind of cracks me up when people whine about all the Fords being built in Mexico.
Listing of Ford plants worldwide.
https://en.wikipedia.org/wiki/List_of_Ford_factories
Better to build a factor in the R-T-W states. The big three are run by idiots. They want to go from Detroit to Chiapas with out stopping in Tennessee.