Biden and Vice President-elect Kamala Harris introduced their nominees to lead the Commerce and Labor departments, as well as the Small Business Administration -- all posts that will be critical to implementing his economic agenda once he takes office later this month.

Biden opened by touting the historic firsts of his Cabinet.

"This will be the first Cabinet ever that is evenly composed of as many women as men," Biden began. "This will be the first Cabinet ever with a majority of people of color occupying this Cabinet. And it has more than a dozen history-making appointments, including the first woman secretary of treasury, first African American defense secretary, the first openly gay Cabinet member, and the first Native American Cabinet secretary."

Biden is nominating Rhode Island Gov. Gina Raimondo for secretary of commerce. Raimondo, who was elected as the state's first female governor in 2014, was under consideration to be Biden's running mate and was a potential choice to lead the Department of Health and Human Services.

For secretary of labor, Biden is nominating Boston Mayor Marty Walsh. Walsh, who has led Boston since 2014, would be the first union member to serve in the post in almost half a century if confirmed by the Senate.

Biden also introduced Isabel Guzman as his pick to serve as small business administrator. She currently serves as the director of California’s Office of the Small Business Advocate and is a key leader in the state’s COVID-19 economic recovery.

Finally, Biden is nominating Don Graves, an executive at KeyBank, as his nominee for deputy secretary of commerce.

All the positions introduced Friday, except deputy commerce secretary, are Cabinet level.

House Minority Leader Kevin McCarthy said he has reached out to Biden and plans to talk to him later Friday about uniting the country -- as he expresses opposition to the idea of impeaching Trump again.

“Impeaching the President with just 12 days left in his term will only divide our country more,” McCarthy wrote in a statement Friday. “I have reached out to President-elect Biden today and plan to speak to him about how we must work together to lower the temperature and unite the country to solve America’s challenges.”

McCarthy also confirmed he spoke with Trump on Wednesday to urge him “to intervene to quell the mob.”

House Speaker Nancy Pelosi, meanwhile, told colleagues on a caucus call Friday afternoon she is planning to speak with Biden later in the day about how she wants to move forward regarding Trump after publicly calling for his removal from office.

-ABC News' John Parkinson

In a caucus call with House Democrats, House Speaker Nancy Pelosi told her colleagues that Chairman of the Joint Chiefs of Staff Gen. Mark Milley assured her "safeguards" are in place when she expressed her concerns about Trump having access to nuclear codes in the last days of his presidency, sources on the line told ABC News.

She said she is planning to talk to Biden later in the day about how to move forward regarding Trump, according to sources on the call, after publicly calling for Trump's immediate removal through the 25th Amendment or through impeachment if Vice President Mike Pence and Cabinet officials refuse to proceed.

"The president chose to be an insurrectionist," Pelosi said on the call, according to sources.

"Impeachment encourages conversation on the 25th Amendment. That’s picked up a lot of steam," she said.

Pelosi, according another source, said she is "emotionally" devastated by Wednesday but remains "dispassionate" about how to move forward.

More than half the caucus -- or 130 House Democrats -- are calling for Trump's immediate impeachment and have co-sponsored a resolution from Rep. David Cicilline, D-R.I. The House could take it up and pass it to the Senate as soon as next week.

But some Democrats are urging caution, wary of derailing Biden's agenda. Pelosi wanted to take the temperature of her members before discussing her options with the president-elect.

-ABC News' Mariam Khan, Benjamin Siegel, and Katherine Faulders

Reddit has banned the subreddit r/donaldtrump for what it calls repeated recent violations over the storming of the U.S. Capitol.

"Reddit's site-wide policies prohibit content that promotes hate, or encourages, glorifies, incites, or calls for violence against groups of people or individuals. In accordance with this, we have been proactively reaching out to moderators to remind them of our policies and to offer support or resources as needed. We have also taken action to ban the community r/donaldtrump given repeated policy violations in recent days regarding the violence at the U.S. Capitol," the platform said in a statement.

Reddit had previously banned a similar subreddit, r/the_donald, which was a factory of toxic pro-Trump memes and narratives until the site took it down last year.

The president himself is not involved with these forums, though it’s not unheard of for memes to begin life there and in similar online forums before making their way into the president’s media diet.

-ABC News' Evan McMurray and Ben Gittleson

Federal law enforcement officials have advised police agencies in state capitals to increase their security posture at statehouses around the country following the riot at the US Capitol, law enforcement sources told ABC News.

The concern, the sources said, is an emboldened right-wing that considered Wednesday a success and may next turn to locations in closer to home.

Like the U.S. Capitol, statehouses are often backdrops for demonstrations that law enforcement officials now fear could turn violent.

“The safety of the Massachusetts State House, its employees and its neighbors is of utmost importance. As we witness the events in Washington, DC and across the nation, we are aware of the need to ensure the safety of this building and those who work within it. We continually assess our security needs and will adjust as necessary,” said Massachusetts Gov. Charlie Baker, Senate President Karen Spilka and House Speaker Ronald Mariano in a joint statement.

Across the country in Washington state, Gov. Jay Inslee activated the National Guard to patrol the Capitol Campus when the state legislature convenes Monday.

“As legislators begin their work on behalf of the people of the state of Washington, we must do whatever we can to ensure that they can do that work without fear, intimidation or harassment. The actions we saw in both Washington, D.C. and Olympia earlier this week were completely unacceptable and will not be repeated in our state capital again,” Inslee said.

Security was also increased around the statehouse in Maryland, Gov. Larry Hogan said.

“Maryland State Police as well as Maryland Capitol Police, some of which you see around here, have increased security around the Maryland State House complex, since there’s been a number of incidents at state capitols and governor’s mansions around the country,” Hogan said.

-ABC News' Aaron Katersky and Josh Margolin