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Walking with wife and First Lady Dr Jill Biden, the new president ran over to journalist Al Roker and gave him a fist-bump, telling him it 'felt great' to be holding the country's most powerful post.
His exchange with Roker was remarkably similar to the one they shared in 2013 following Obama's second inauguration - the only really difference was that it was a fist-bump rather than a handshake, and they were both wearing facemasks.
And Biden is now president, rather than vice president, of course.
The 78-year-old was sworn as the 46th President of the United States yesterday (20 January) at the Capitol, taking over from Donald Trump - who did not attend the event.
Kamala Harris was also sworn in as the 49th Vice President, the first woman to hold this position.
Reciting the presidential oath, Biden said: "I do solemnly swear that I will faithfully execute the Office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States."
He then went on to address the nation, assuring the country that 'democracy had prevailed' after a troubling few weeks and months.
Mr Biden said: "A new America has risen to the challenge today. We celebrate the triumph not of a candidate, but of a cause, the cause of democracy.
"The people, the will of the people has been heard and the will of the people has been heeded.
"We've learnt again that democracy is precious. Democracy is fragile. At this hour, our friends democracy has prevailed."
Mr Biden went on to urge people to come together and dismiss the tide of extremism and racism, and pledged to work 'as hard for those who didn't vote for him as for those who did'.
He said: "My whole soul is in this, bringing America together.
"I ask every American to join me in this cause. To fight the foes we face: anger, resentment and hatred, extremism, lawlessness, violence, disease, joblessness and hopelessness.
"With unity, we can do great things, important things, we can right wrongs.
"We can put people to work in good jobs. We can teach our children in safe schools. We can overcome the deadly virus. We can reward work and rebuild the middle class and make health care secure for all. We can deliver racial justice and we can make America once again the leading force for good in the world."
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