Seems to be a clever move by Trump to protect US industry:
Donald Trump has announced the creation of a critical mineral reserve worth nearly $12bn, a stockpile that could counter China’s ability to use its dominance of the hard-to-process metals as leverage in trade talks.
“Today we’re launching what will be known as Project Vault to ensure that American businesses and workers are never harmed by any shortage,” Trump said at the White House on Monday.