The 15 executive actions are an attempt to essentially rewind the last four years of federal policies with striking speed.
Greta Thunberg mocked Donald Trump's final moments in office on Twitter, where the outgoing president can no longer respond.
President-elect Joe Biden and vice-president-elect Kamala Harris are to be sworn in at a ceremony in Washington, D.C.
The FBI has warned of armed protests being planned by violent Trump supporters in all 50 state capitals as well as in Washington for the inauguration of President-elect Joe Biden.
The violent insurrection at the U.S. Capitol is intensifying scrutiny over security at an inauguration ceremony for President-elect Joe Biden.
Americans will notice the difference between the incoming Biden administration and the departing Trump administration on day one of the new president's term.
Under a system that’s been tweaked over two centuries, there is still a monthslong timeline during which the 538-member Electoral College picks the U.S. president.