Screade® | Wharton's Jeremy Siegel says it's 'scandalous' the U.S.

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Wharton's Jeremy Siegel says it's 'scandalous' the U.S. doesn't have a rare earths reserve - CNBC

Siegel told CNBC's "Squawk Box" that the U.S. should create a rare earth minerals reserve as rising trade tensions threaten global supply chains.