Donald Trump sworn in as the 45th President of the United States
With his hand on the Bible, Donald J. Trump has pledged to 'preserve, protect and defend the Constitution of the United States,' taking the formal oath of office and completing an unlikely trajectory from real-estate mogul to the nation's 45th president.
Donald Trump is sworn in as the 45th President of the United Statesrn/ Photograph: Chip Somodevilla/Getty Images