House Democrats have already voted to impeach Trump for a second time over charges he incited the assault by his supporters on the US Capitol building which left five people dead.
Favoured by Trump supporters, Parler was removed from the Google and Apple app stores and kicked off Amazon's its web-hosting service following violence at the US Capitol.
The nighttime display followed performances by a parade of celebrities who descended on Washington to welcome the new Biden-Harris administration.
With Democrats in control of the White House and Congress, Republicans face profound questions about what the party stands for without Donald Trump in charge.
Haaland supports one of Biden's first environmental ventures, cancelling the Keystone XL pipeline permit.
Trump, who departed the White House shortly after 14:00 CET with his wife, Melania, said it had been "a great honour, the honour of a lifetime" to serve as president.
The top ranks of American politics have historically been dominated by men, almost all of them white. That's now coming to an end.
Kamala Harris makes history today as the first woman to ever be VP, but she has interesting climate credentials too.
The executive order will take 30 days to come into effect and was one of 17 signed by Biden on his first day in office.
In a statement issued on his last day in office, Mike Pompeo said China "has committed crimes against humanity" against Uighurs and other ethnic and religious minority groups in the northwestern province of Xinjiang.