But, Detroit no longer spends that kind of heavy dough in the USA. Maybe in Mexico, if you want to consider Mexico part of the USA.
For instance, my old Nissan PU was made in Tennessee. The Dodge Ram is made in Mexico. Profits from the Nissan go to Japan & those from the Ram go to the US.
Thing is, the profit margin is just that: marginal. The rest of the cost to produce a truck: labor, capital, materials, etc. amount to MUCH more than the profit margin. So, American workers, parts suppliers, the UAW, the lunch diner down the street from the Nissan plant all make a buck when I buy a Nissan PU, along with the rice-eating management.
When I buy a Dodge Ram PU, a buncha Mexicans south of El Paso and some Detroit suits make a buck and American working stiffs get stiffed.