I'm skeptical of how serious Apple's efforts have been at setting up factories/supply chains in the US.
Musk is running several factories in the US between Starlink in Washington, Falcon in Hawthorne, Starship production in Texas, vehicle production in Fremont and Austin, battery packs in Nevada...
These span numerous industries where competitors insist that skilled laborers and tooling isn't available. I know lots of people who used to work at HP factories in the US and are now working at customer service desks because manufacturing jobs have largely disappeared from the US. What is Musk doing several times over that Apple can't do?
(I suspect the answer is compensate employees.)