If doing the cars here today was the best choice they would all be made here today. The reason they aren't is because we found something more productive to do. The Chinese are better than us at making cars.

Our ressource aren't infinite. If we are making cars here, it is likely and almost certain the we would be pulling ressources (like labor) out of an other field.

If it was really as easy as "buying local is better" then why wouldn't they US put a 100000% tariffs on t-shirts to be sure they are all made here?

(I appreciate the convo it's ok if you're pulling things out of your ass)