I work with Toyota and Lexus car parts, they come from Cincinnati, but they are made all over the world. It's a car, the days of being made in one plant died decades ago. The supply chain is huge, even the material needed to make the part comes from world trade. It is assembled in one plant, but even then final assembly can be someplace else. Business is complicated, Trump only knew how to buy and sell a piece of real estate, and he never really did much.