Donald Trump is still being protected by his own private bodyguards. That has some officials very worried.

At President-elect Donald Trump's side during any given event, you'll find a Secret Service agent and, most likely, a man by the name of Keith Schiller. The retired New York City cop has been the Trump Organization's security director since 2004, but, as Politico reported, Schiller "provides more than just security."

Schiller reportedly fields Trump's calls, deciding who gets through to the president-elect, and Trump often asks him for his opinion on "all manner of subjects," Politico noted. "Keith is kind of a consigliere," a transition team official said. "He knows all the players, all the properties. He has the confidence of Trump and of the family."

Already, Schiller's presence has posed some problems for Secret Service. Aside from being a "major break from tradition" for a president to not entirely entrust Secret Service with his protection, Politico reported the arrangement presents some risks:

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Schiller is reportedly expected to serve as "a personal White House aide," acting as the president-elect's "full-time physical gatekeeper."

For more on Schiller, and Trump's private security forces, head over to Politico.