There is supposedly some reshoring in the US but I don't really see it from hardware startups unless they have something bulky/specialized/low volume. The bigger question is not whether we should employ in one taxation region or another to concentrate wealth as we see fit, but rather how quickly generalized arms, machine vision and new manufacturing processes will impact our ability to rely on labor as a source of societal stability.
Questionable revival or not, the fact remains the US manufactures more in terms of dollars than it ever has -- it just does it with dramatically fewer people.