They are not solved with compensation...simply put Taiwanese in both the US or Taiwan will put in more hours and work harder regardless of pay. Will compensation get some US workers to work as hard...yes...but not enough for what is needed to expand the AZ plant and keep it running. The numbers in the OP are Taiwan salaries...AZ salaries are upwards of $140-150K (not including bonuses) for someone with <10 years experience. These are not SWE...these are mechanical, electrical and chemical engineers...not in competition with Google, Apple, Meta, etc.