University of Virginia's Miller Center

As President Trump continues to contest the results of the election, President-elect Joe Biden continues to shape his administration, which will take office on Jan. 20. But there is still no formal transition underway, a far cry from the last several times new presidents have taken power.

In 2009, just before then-President-elect Barack Obama was to deliver his inaugural address, members of the outgoing Bush administration's national security team sat down with the people who were about to take their place.