Let's see. Russia could do something about all the oligarch children living in USA (along with their oligarch parents sometimes). There was a bill introduced a couple of years ago that would forbid Duma membership for holders of foreign real estate and business (IIRC, I'll have to check specific wording of the proposal), plus bits about foreign citizenship. It was shot down.

China could start embargoes of their own. They've already started with the gallium export. Or do they honestly believe allowing a Tesla factory in China would translate to Musk lobbying the yankee government to go easy?