Donald Trump at the White House

President-elect Donald Trump and President Barack Obama at The White House.

Donald and Melania Trump after meeting Barack and Michelle Obama at The White House.

Trump aide Dan Scavino, left, and other members of President-elect Donald Trump's staff arrive at the White House

President-elect Donald Trump and President Barack Obama in the Oval Office.

Donald Trump with wife Melania Trump and vice-president elect Mike Pence before meeting senior Republicans in Washington.

Donald Trump with wife Melania and House Speaker Paul Ryan at the US Capitol.

White House staff on the steps of the executive office building as they wait for the arrival of President-elect Donald Trump.

A protective barrier of sanitation department trucks parked in front of Trump Tower on 5th Avenue to provide security to the president-elect.

Demonstrators in New York on Wednesday, the first day of protests against Donald Trump's election victory.

A New York Police Department (NYPD) officer in front of Trump Tower.

Protesters outside the White House on Thursday

Anti-Trump demonstrators protest in Chicago, Illinois.