Joe Biden has called for an end to the political divisions between Americans, during his first speech as US President.
Mr Biden has been sworn in at a ceremony in Washington DC.
He’s asking those who didn’t vote for him to give him a chance, as the nation enters a new era.
“Take a measure of me and my heart – if you still disagree, so be it. That’s democracy; that’s America,” he said at the inauguration.
“The right to dissent peaceably within the guardrails of our republic is perhaps this nation’s greatest strength.”
Kamala Harris has been sworn in as the Vice President of the United States, becoming the first woman and first person of colour to occupy the role.
Outgoing President Donald Trump didn’t attend the inauguration, choosing to travel to Florida instead.
He told troops, it’s been an honour to serve the country.
“I will always fight for you; I will be watching, I will be listening, and I will tell you that the future of this country has never been better,” he said.
“I wish the new administration great luck and great success.”
He did follow one Presidential tradition by leaving his successor a note in the White House.