The Senate does not have to approve the White House Chief of Staff. But he/she may be fired at will by the President
The House does.
Rahm Emanuel was the former White House Chief of Staff.
president sec. Deputy cheif cheif of staff white house counselPresident's chief of staff, deputy chief of staff, White House counsel, and press secretary.
The senior member of the White House is the White House Chief of Staff
The current White House Chief of Staff is Rahm Emanuel.
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The director of White House Operations is the President's Chief of Staff.
No one in the White House can limit the amount of time to debate a bill. The rules governing it are specific to the House and Senate, which are not part of the Executive Branch like the President (who lives in the White House).
The President
Denis McDonough
He lives in the white house
Jacob Lew