President Barack Obama has left a letter for his successor in the Oval Office before departing the White House - as is the tradition from one president to the next.
The White House is providing no details about what Obama conveyed to Donald Trump in the note.
Obama campaigned vigorously against Trump. But the president and president-elect have had regular phone conversations since the election, with the president offering guidance and advice.
In their final event at the White House, the president and First Lady Michelle Obama hosted a morning tea for Trump and his wife Melania.
The Obamas will accompany the Trumps to the Capitol for the swearing in at midday (0400 AEDT).
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