Biden fractures foot after fall, will likely be in walking boot 'for several weeks'

Biden introduced his nominees for key foreign policy and national security positions in his administration at a press conference Tuesday.

“While this team has unmatched experience and accomplishments, they also reflect the idea that we cannot meet these challenges with old thinking and unchanged habits,” Biden said. “For example, we're going to have the first woman lead the Intelligence community, the first Latino and immigrant to lead the Department of Homeland Security, and a ground-breaking diplomat at the United Nations.” 

For secretary of state, Biden nominated Anthony Blinken, one of his “closest and most trusted advisers.” 

For secretary of homeland security, Biden nominated Alejandro Mayorkas, a former deputy secretary in the department.

For director of national intelligence, Biden nominated Avril Haines, the former deputy director of the CIA and former deputy national security adviser to President Barack Obama. 

For U.S. ambassador to the United Nations, Biden nominated Linda Thomas-Greenfield, a diplomat with 35 years in foreign service. 

For his national security adviser, Biden picked Jake Sullivan. 

For the first time ever, Biden also announced he will have a presidential envoy on climate, and nominated former Secretary of State John Kerry to the position.

The Nevada Supreme Court certified its election results Tuesday. The next step is for Democratic Gov. Steve Sisolak to sign the certificates of election.

In his first appearance since the transition became official, Trump spoke for just 66 seconds in the White House briefing room about the Dow Jones Industrial Average trading above 30,000. 

He made no reference to the election or the GSA, and made only a passing reference to the pandemic.

The president refused to take shouted questions from reporters during the brief news conference. This marks the 21st day in a row that the Trump has refused to take questions from reporters, despite continuing to promote baseless conspiracy theories about the election on Twitter."

The stock market’s just broken 30,000. Never been broken, that number," Trump said. "I just want to congratulate all the people within the administration that worked so hard."

Notably, Trump was singing a very different tune Tuesday than he did while campaigning when he repeatedly warned that the stock market would “crash” if Biden won the election.

“If he is elected, the stock market will crash,” Trump said during an Oct. 22 debate.

In reality, markets have rallied sharply since Trump lost the election.

-ABC News' Ben Gittleson

President-elect Biden's transition team began reaching out to federal agencies on Monday night, soon after receiving the green light from the GSA and its embattled Administrator Emily Murphy. 

Some of the more than 500 Biden staffers and volunteers organized into agency review teams are already in the process of scheduling additional briefings and meetings with counterparts at the Justice Department, Pentagon, Centers for Disease Control, and Department of Health and Human Services, according to a transition official. 

Under normal circumstances, those teams would be fanning out across the Washington, D.C., area to meet with officials at each agency and gather in their own office space set aside for presidential transition work. But most of Biden's operation is expected to continue working remotely, given the pandemic, though exceptions include team members working in the national security space, who will need to access classified information in secure settings.

As for Biden, the president-elect could receive his first presidential daily brief -- the sensitive intelligence document seen by only a handful of senior administration officials along with the commander-in-chief -- in the coming days. 

-ABC News’ Benjamin Siegel