Trump-Biden transition updates: At least 20 arrested, 1 stabbed at DC protests

Jen Psaki, an adviser to the Biden Harris transition, said on a call with reporters Friday afternoon the Biden team is not looking to engage in legal battles with the GSA -- as it slow-walks Biden’s ascertainment as president-elect -- but that it is “concerning” not to have access to vital transition information in the midst of a pandemic. 

“We're not interested in having a food fight with the GSA administrator or anyone really,” Psaki said. “We just want to get access to intelligence information, to threat assessments, to the ongoing work on COVID, so that we can prepare to govern, bring the American people together and get the pandemic under control.”

She noted that sentiment is "starting to ring" with the GOP, as a growing list of Senate Republicans have called on the Trump administration to begin giving Biden classified briefings. 

Psaki also said not to expect any personnel announcements from Biden this weekend and that the president-elect will be taking a couple days off with family in Delaware.

Trump will provide an update on Operation Warp Speed at 4 p.m. in the Rose Garden, according to his updated public schedule from the White House.

It's been eight days since Trump spoke to White House reporters -- the longest stretch of his presidency -- and 10 days since he took questions.

A U.S. Marine stood outside the West Wing Portico Friday afternoon indicating Trump was in the Oval Office. His schedule showed him receiving a status update on Operation Warp Speed, the federal government's coronavirus vaccine program.

Trump's update was the president’s first publicly announced event related to the pandemic all week. It comes as the virus is raging, with the country breaking records of new cases and hospitalizations, and after months of Trump not attending a meeting of the coronavirus task force.

-ABC News' Jordyn Phelps and Ben Gittleson

House Speaker Nancy Pelosi, D-Calif., slammed Republicans on Friday for not accepting the election results and, she said, "making it even harder to address the massive health and economic crisis facing America."

"The longer the Republicans keep up the charade, the further out of control the COVID crisis with spiral, and more endangered Americans will be," Pelosi told reporters on Capitol Hill. 

The House Speaker also fielded questions about House Democrats' poor performance in the election that could give them the slimmest majority in the House in decades. She claimed Democrats always knew it would be tough to hold onto seats won in Trump districts two years ago, even though she and her team predicted they would expand their majority this year.

"We're getting ready already for the next time, a number of our candidates have said they're going to run again," she said of the losing Democrats.

Asked if she took responsibility for the losses as she left the the press conference, Pelosi said, "I take responsibility for winning the majority."

-ABC News' Benjamin Siegel