Something like 300 million of the 400 million USA citizens live East of the Mississippi River.
The US Steel industry exhaust and air pollution was creating acid rain across Millions of People,
eating granite headstones.
The death of the USA steel industry, and the rise of Steel and plastics dirty transition from raw natural resources being a task now greatly accomplished in East Asia only dumps the acid rain over the Pacific Ocean, where there is considerably less human inhabitants.
Yes, people in Taiwan/Formosa ride their scooters with masks on, then have to wipe the soot or plastics or whatever is drifting in the air off their helmet vision visors, daily.... So, the point is that it is preferable for east coast USA habitation, to have this type of manufacturing tasks completed in East Asia, then bring the 2nd stage product like well engineered Engines, Trannys, and Pellet Plastics to the USA for assembly and extrusion in viable products.
*Gotta give a Nod to "Reagan", for thinking that all the way through by himself on his own...