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

Virginia Gov. Ralph Northam said he sent 2,000 National Guardsmen and hundreds of state police to help stop the president’s supporters from rioting at the U.S. Capitol during a joint session of Congress last week.

Now, with Biden’s inauguration just days away, he said his state is prepared to ensure a peaceful transition of power in Washington, D.C., and ready to face any other threats that might emerge after multiple recent reports of threats at capital buildings throughout the country.

“Unfortunately, we have experience here in Virginia,” Northam told ABC News’ Linsey Davis. “We had the riots in Charlottesville back in August 2017, and then we had a lot of armed protesters in January (2020), and so, we have some experience.”

With fences posted around the state’s capital building and windows boarded up, Northam said it’s “an unfortunate situation, but we’ve made it known to these individuals that if they come here looking for trouble, that we’re ready and the outcome is not going to be good for them.”

Northam said that the riot at the Capitol has also impacted his state’s ability to vaccinate people for the coronavirus.

“It’s unfortunate that we’re having to use the resources that we are (using),” he said. “We’re in the middle of a pandemic. … The Guardsmen, they’ve been very involved with our testing and now our vaccination program. We’d like to have them doing that, but instead, we have a president that has incited violence and we need to protect the country.”

-ABC News' Anthony Rivas