The chief of staff position, which serves as a gatekeeper and agenda-setter for the president, is typically one of the most important early choices for an incoming president.
US President elect Donald Trump shakes hands with Republican National Committee Chairman Reince Priebus (C) as Vice President-elect Mike Pence (R) looks onat election night rally in Manhattan, New York, US, November 9, 2016(photo credit: REUTERS)ByREUTERSUpdated: