Meanwhile all the other countries are becoming lithium extraction experts, and the US isn't developing any of that. Who is going to do the extraction in the US a few decades from now? How are you going to avoid being forced to partner with foreign companies for their expertise?

It's the same reason why all the manufacturing outsourcing was so short-sighted. Sure, you're saving a few bucks on labor, but you are literally giving away all your knowledge about the manufacturing process! Those local factory workers you are firing? They won't be around to train new workers when you want to restart the local factory a decade or three later. Meanwhile, the factories overseas haven't been sitting idle either and have kept developing their manufacturing processes. They will not give you their trade secrets so you're going to have to reinvent the wheel yourself - without experts.

Congratulations, you have created your own competitor, and they are now better than you.