During WWII many of the trucks ferrying German troops around were made by GM and Ford in Germany. These same companies had secret deals with the Nazis to make sure that their assets were protected during the war.
It is not hard to imagine that when the war with China comes, and it will come, as sure as the sun will rise tomorrow. The Chinese will use tanks and trucks and planes built in American factories built by GM, Ford and Boeing.
It seems to me that we never learn.