Wdym? the company who owns the mine is owned by a chinese company lol.
Thacker Pass Lithium Mine - Wikipedia
Lithium Nevada, LLC - a wholly owned subsidiary of Lithium Americas Corp, whose largest shareholder is the world's largest lithium mining company, Chinese Ganfeng Lithium.
Who owns a company doesn't matter as much as where the resource is. Foreigners can't cut you off from your own country, and they can't sell anything without following national laws.