I heard long ago the foreign car plants here (symbolic) in the USA are just assembly plants. The exporters can cram more cars on a ship when dissembled. Plus, domestic assembly plants are good propaganda for the public. I say 95% of imports come in on ships. I would not be surprised if US car manufacturers have parts made in China et al. Don’t take anything for granted that the media says. Everything is somebody’s advertisement.
http://www.alamy.com/stock-photo-aerial-above-imported-cars-port-of-benicia-california-17785688.html
https://www.shutterstock.com/image-photo/aerial-view-new-cars-lined-port-674294650
https://www.123rf.com/photo_5174454_a-row-of-newly-imported-cars-and-ship-at-dock.html