No, because all of those components, which are built outside of the USA, would also go up exponentially. As would all of the cost of compliances, etc. You picked one line item - which itself was flawed because of how it was processed - out of the whole thing and thought you understood the whole picture. Common mistake of folks who’ve not been there, done that.
And you assumed all the efficiencies, which were built into the very fabric of these cities, would be the same in the US, and they would not. Nothing would be the same, period. Like I said, this stuff is too complicated for most.
If they could have done it here, they would have.
I am holding all variables equal except assembly. A concept foreign to you. The supply chain can remain exactly as is with the shipping location for components in the USA. Yes it would cost more per unit. maybe 10 dollars? But the benefits are well worth it to me, someone who thinks about his country over 1% on the bottom line. I think Apple has 650 billion in the bank they could assemble and build components here to and still make a killing.