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With less than two weeks left in the U.S. Supreme Court's term, the justices handed down four decisions on Monday. Defying predictions, three were decided by shifting liberal-conservative coalitions.

Here, in a nutshell, are the results, as well as the fascinating shifting votes:

Dual sovereignty upheld, with Ginsburg, Gorsuch dissenting

Dr. Louise Aronson says the U.S. doesn't have nearly enough geriatricians — physicians devoted to the health and care of older people: "There may be maybe six or seven thousand geriatricians," she says. "Compare that to the membership of the pediatric society, which is about 70,000."