Donald Trump becomes the 45th President of the United States on Jan. 20, 2017. Here's how the day unfolded.
In Photos: Inauguration Day
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President-elect Donald Trump, left, shakes hands with President Barack Obama before the 58th Presidential Inauguration at the U.S. Capitol in Washington, Jan. 20, 2017.
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President-elect Donald Trump waves with Vice President-elect Mike Pence and his wife Melania Trump before the 58th Presidential Inauguration at the U.S. Capitol in Washington, Jan. 20, 2017.
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President Barack Obama and first lady Michelle Obama greets President-elect Donald Trump and his wife Melania Trump at the White House in Washington, Jan. 20, 2017.
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Former President of the United States George W. Bush and wife Laura Bush arrive near the east front steps of the Capitol Building before President-elect Donald Trump is sworn in at the 58th Presidential Inauguration on Capitol Hill in Washington,D.C. Jan.