https://www.cnet.com/roadshow/news/panasonic-tesla-batteries-cuban-cobalt/

Panasonic sourced cobalt from a Canadian supplier for its Tesla battery cells, and that supplier might have gotten its cobalt from Cuba.

If you're wondering why that's a big deal, then maybe you didn't pay too much attention in your US history class, but Cuba is subject to sanctions by the United States government and can't buy from the US, nor can US companies buy from Cuba. The fact that the Canadian company was supplying Cuban cobalt for US-bound batteries is sort of a gray area, but better safe than sorry, right?