P.M. Edition for Dec. 19. Aides and advisers stepped in to keep President Biden’s agenda on track despite the limitations of the oldest president in U.S. history. WSJ investigations reporter Rebecca Ballhaus tells us how this affected his presidency. And President-elect Donald Trump endorses a new deal that House Republicans have put together in an effort to avoid a government shutdown this weekend. Plus, sales of previously owned homes in the U.S. are on track to hit the lowest level this year since 1995, even as November saw sales numbers tick up. Alex Ossola hosts.

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