Basically, "all" (haha) you have to do to make this happen is hire people who have have already implemented the process you want to replicate somewhere else and then put them under people who have operated comparable industry in your target country of manufacture. I've seen people do it with various degrees of success, IMO it's never worth trying without a really good reason (eg you have a brand advantage for being made in the Japan/Germany/Switzerland/USA and etc) which sometimes you do.

I've been a part of electronics manufacturing and I absolutely agree that moving this kind of manufacture has never really been done in the US (specifically, moving an assembly process developed and executed in the east to the USA) especially for a product as complex as a smartphone. That said, I've seen it done at a small scale several times and generally I can say it's quite possible to do it, as long as you can accept a premium of 5-15%.