Trump transition live updates: Trump announces fracking executive as energy secretary

While control of the House has not yet been projected by ABC News, Republicans are inching toward maintaining their slim majority.

But already, Trump has picked several lawmakers to serve in his administration: Rep. Elise Stefanik for United Nations ambassador and Rep. Mike Waltz for national security adviser.

Speaker Mike Johnson, asked about the issue on Tuesday, said he's spoken to Trump about it several times.

"We have a really talented Republican Congress ... Many of them can serve in important positions in the new administration. But President Trump fully understands, appreciates the math here and it's just a numbers game," Johnson said. "You know, we believe we're going to have a larger majority than we had last time."

The speaker added: "I don't expect that we will have more members leaving, but I’ll leave that up to him."

Billionaire John Paulson said Tuesday he does not plan to formally join the administration as the secretary of the U.S. Department of the Treasury, though he said he intends to remain actively involved with Trump's economic team.

"Although various media outlets have mentioned me as a candidate for Secretary of the Treasury, my complex financial obligations would prevent me from holding an official position in President Trump’s administration at this time," Paulson said in a statement.

"However, I intend to remain actively involved with the President’s economic team and helping in the implementation of President Trump’s outstanding policy proposals," he added.

-ABC News' Beatrice Peterson

House Speaker Mike Johnson confirmed that Trump is expected to visit the U.S. Capitol to celebrate a potential Republicans "trifecta" on Wednesday morning before he sits down in the Oval Office with President Joe Biden later in the day.

"Well, I'll say I didn't intend to break this as news this morning," Johnson quipped as he held a press conference with House Republican leadership.

"He wanted to come and visit with House Republicans, so we're working out the details of him gathering with us potentially tomorrow morning, before he goes to the White House," Johnson said. "And that would be a great meeting and a moment for all of us, there's a lot of excitement, a lot of energy here. We're really grateful for President Trump leaving it all on the field to get reelected."

ABC News' John Parkinson, Isabella Murray and Lauren Peller

Returning to Washington on Tuesday, Speaker Mike Johnson and other top House Republicans took a victory lap on last week's election results.

While ABC News has not yet projected House control, Republicans are three seats away from clinching the 218 needed for a majority.

Johnson said they are monitoring outstanding races closely but are confident they will have a "unified" government come January.

"This leadership will hit the ground running to deliver President Trump's agenda in the 119th Congress, and we will work closely with him and his administration to turn this country around and unleash, as he says, a new golden age in America," Johnson said at a press conference on the Capitol steps.

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