Biden, in an evening address from Wilmington, Delaware, is announcing his vaccination and economic rescue legislative package.

The ambitious $1.9 trillion proposal focuses on stimulus amid the ongoing pandemic.

Biden's plan would dedicate more than $1 trillion of the $1.9 trillion price tag for direct stimulus, officials said, while $400 billion would go toward COVID-related projects, including the nationwide vaccination program, and $440 billion toward relief for communities and businesses.

The plan includes direct payments of up to $1,400 to families in need, that when combined with the recent $600 stimulus payment would deliver on Biden's pledge to pass $2,000 of direct payments, along with a $400 weekly unemployment insurance benefit through September and a child tax credit.

-ABC News' Molly Nagle

Photos show the beginning of the process to move President Donald Trump out of the White House, as workers load boxes on to trucks.

Biden on Thursday announced his slate for new leadership at the Democratic National Committee, including former South Carolina U.S. Senate candidate Jaime Harrison to be the next chair of the DNC.

Harrison, who lost the 2020 race to GOP Sen. Lindsey Graham last year, despite breaking numerous fundraising records, will officially become DNC chair after the full committee votes on Jan. 21, the day after Biden's inauguration.

Graham congratulated Harrison on the news in a tweet earlier Thursday.

In addition to Harrison, Biden also announced the names of four DNC vice chairs, all of whom were prominent backers of his presidential campaign, including Michigan Gov. Gretchen Whitmer, who served as a campaign co-chair.

Whitmer is joined by Atlanta Mayor Keisha Lance Bottoms, Illinois Sen. Tammy Duckworth and Texas Rep. Filemon Vela as new DNC vice chairs.

House Speaker Nancy Pelosi called Harrison an "inspiring, energizing and influential" in a press release.

"As former Chair of the South Carolina Democratic Party and senatorial candidate, Jaime brings an outstanding track record of success -- from galvanizing the grassroots, mobilizing millions and shattering fundraising records -- that will be critical during this pivotal moment for our Party and Country," she added.

-ABC News' John Verhovek and Beatrice Peterson

During an unscheduled stop on Capitol Hill, Vice President Mike Pence greeted National Guardsmen and telling them that he had just come from a briefing where he heard about their efforts.

He thanked the personnel for "stepping forward for your country" to make the historic transfer of power possible.

"It's been my great honor to serve as your vice president and I want to thank you for your service," Pence said.

The vice president then spoke to individual guardsmen asking them where they are from and how long they served.

About 20,000 National Guard members are expected in Washington this week to protect the city ahead of Biden's inauguration.

"Have a safe inauguration," Pence said.

-ABC News' Elizabeth Thomas and John Parkinson

At the top of his remarks in Alamo, Texas, after making brief comments about the strength of the border wall, the president addressed the riot at the Capitol -- remarking that it “has been a difficult year and a difficult election."

“Free speech is under assault like never before,” Trump said -- calling the latest impeachment effort a "hoax" but threatening the efforts to remove him from office could haunt Biden.

“The 25th Amendment is of zero risk to me, but will come back to haunt Joe Biden and the Biden administration," Trump said. "As the expression goes, 'Be careful what you wish for."'

“Millions of our citizens watched last Wednesday as a mob stormed the Capitol and trashed the halls of government. As I have consistently said throughout my administration, we believe in respecting America’s history and traditions -- not tearing them down,” Trump said, reading from a teleprompter.

“We believe in the rule of law, not violence or rioting," he said, going on to describe the pandemic landscape. "This has been a difficult year and a very difficult election. The pandemic has made it a very, very difficult year for our country and virtually every country around the world. Now is the time for our nation to heal -- it is the time for peace and calm."

“Respect for law and law enforcement -- so many are here -- is the foundation of the MAGA agenda, and we are a nation of law and order. That is why we are here today: to talk about what we must do to uphold the rule of law in America and how we must continue to support our law enforcement heroes, which is exactly what you are," Trump said.

At the same time as Trump spoke, acting U.S. Attorney in the District of Columbia Michael Sherwin announced that more serious indictments against some already charged in the violent Capitol siege were imminent and said there were "pipe bombs" found outside the Capitol Wednesday.

Before Tump's remarks, Trump walked slowly to the border wall, lined with American flags. He bantered with border officials speaking as he gazed upon the wall before he approached a plaque and signed it.

-ABC News' John Parkinson and Ben Gittleson