Tesla use BYD, Panasonic, their own. American made model Y and anything else that uses the new battery form factor use Tesla batteries made in America; other cars made in the US use US made Panasonic and Tesla batteries; Teslas made in China use BYD batteries I don't know what European made Teslas use

Tesla is incredibly vertically integrated, they are much more American than any other American car builder

Mine is Chinese, as I live in Australia which is near China and half a world from America. But I'd have thought Americans would value American made even if the company owner has bad politics