The government is releasing photos and videos to promote President Trump’s immigration agenda, including footage of troops at the border and close-up shots of shackled immigrants.

Through a flurry of orders, the new president quickly began driving the country in a different direction on many contentious issues.

The Inaugural Address that President Trump gave on Monday was in some ways even darker than his “American carnage” inaugural address eight years ago. Michael D. Shear, a White House correspondent for The New York Times, explains.

In his second inaugural address, the president reprised dark themes from his first and laid out an expansive policy agenda.

Mr. Biden emphasized that he did not believe his family did anything wrong, but he feared political attacks by Donald J. Trump.

The incoming president’s team said he would take unilateral action on a variety of fronts during his first hours in office, including 10 executive orders cracking down on immigration and immigrants.

“We’re not leaving the fight,” he told supporters and members of his staff as he prepared to leave Washington.

President Biden used his executive clemency power to protect people targeted by Donald J. Trump, including five members of his family as well as Liz Cheney, Anthony S. Fauci and Mark A. Milley.

Rarely have representatives of current and new presidents of different parties worked together at such a high-stakes moment. But the president and the president-elect didn’t quite share credit.

Responding to a question from a reporter, the president said he believed Americans “want to tell the truth.”

Donald J. Trump issued angry comments about Gov. Gavin Newsom, and President Biden was briefed in California by the state’s fire officials.

In an hourlong news conference at his Florida club, Mar-a-Lago, the president-elect delivered a hodgepodge of grievances, complaints and false claims.

In an essay in The Washington Post, President Biden accused President-elect Donald J. Trump and his supporters of trying to erase the history of that day.

With a recipient list stocked with old-guard icons and political backers, the president is signaling support for the establishment his successor wants to tear down.

President-elect Donald J. Trump repeated false claims about immigration and the border, slammed diversity initiatives and discussed the Panama Canal in the 90-minute address.