CNNUpdated 4:37
White House
Katelyn Polantz
PM ET
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Charles Kupperman
Mick Mulvaney
Caroline Kelly
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Impeachment witness Charles Kupperman distanced himself from acting White House chief of staff Mick Mulvaney on Monday as Mulvaney attempted to join Kupperman's lawsuit testing House subpoena power.
As said here by Katelyn Polantz, CNN