When President Bush begins his second term next year, he may do so with a somewhat changed cabinet and White House staff.
The White House has yet to announce any plans, but some current officials have suggested they may not stay on for an additional four years.
One official who may choose to move is National Security Advisor Condoleezza Rice, who has said she may return to her previous job as professor at Stanford University.
Reporters have also quoted White House Chief of Staff Andrew Card saying he would like to retire from his post.
Political pundits and others in the U.S. media have speculated that Secretary of State Colin Powell and Secretary of Defense Donald Rumsfeld may also be contemplating retirement. Neither official has confirmed his intentions.
Information for this report is provided by Reuters and AFP.