Electric vehicles may actually need MORE automotive labor man-hours than internal-combustion engine ones, and the claims the other way appear to be nothing more than urban manufacturing legend, for the most part. Automakers themselves note that if you include EV Battery Production (which they generally don't do themselves as of now), the game changes. And, the piece adds that some of the carmakers are looking at doing just that. The story adds that a lot of the current battery production is overseas, including China.
As I see it, a Carbon tax plus carbon tariff would address onshoring those jobs, as batteries are heavy, and the carbon amount of the shipping involved has to be high.