Trump transition live updates: Trump picks Gaetz for AG, Gabbard for DNI

Trump has nominated Florida Rep. Matt Gaetz to be his attorney general, he posted on his social media.

Gaetz was seen traveling with Trump in the motorcade Wednesday during the president-elect's visit to Washington, D.C.

The role is a Senate-confirmed appointment.

Trump called Gaetz a "deeply gifted and tenacious attorney" who will "end Weaponized Government, protect our Borders, dismantle Criminal Organizations and restore Americans’ badly-shattered Faith and Confidence in the Justice Department."

Gaetz is an explosive selection by Trump to be the chief law enforcement officer of the federal government, leading the very same executive branch of government that spent years investigating allegations regarding the Florida congressman. Gaetz was informed that the DOJ would not seek charges just last year. He has long denied any wrongdoing.

Gaetz faces an ongoing probe by the House Ethics Committee for the same allegations, related to sex trafficking and obstruction of justice.

Gaetz has been down in Mar-a-Lago almost daily since Election Day, helping make suggestions and input on other administration selections, sources told ABC News.

-ABC News' Will Steakin

Trump announced that former Rep. Tulsi Gabbard is his pick for director of national intelligence.

"I know Tulsi will bring the fearless spirit that has defined her illustrious career to our Intelligence Community, championing our Constitutional Rights, and securing Peace through Strength," Trump said in a statement.

The role is a Senate-confirmed appointment.

Gabbard, who once ran for president as a Democrat, had a prominent role as part of Trump's 2024 campaign team.

Trump has officially announced Florida Sen. Marco Rubio as his nomination for secretary of state.

"Marco is a Highly Respected Leader, and a very powerful Voice for Freedom," Trump said in a statement. "He will be a strong Advocate for our Nation, a true friend to our Allies, and a fearless Warrior who will never back down to our adversaries."

The role must be confirmed by the Senate.

President Joe Biden and Trump had a "substantive meeting and exchange of views" during their nearly two-hour Oval Office meeting on Tuesday, according to the White House press secretary.

"They discussed important national security and domestic policy issues facing the nation and the world," Karine Jean-Pierre told reporters during a briefing following the meeting. "President Biden also raised important items on Congress's to-do list for the lame duck session, including funding the government and providing the disaster supplemental funding the president requested."

Biden also reiterated that "we will have an orderly transition and a peaceful transition of power," she added.

On the national security discussion, ABC News Chief White House Correspondent Mary Bruce asked White House national security adviser Jake Sullivan if Biden made the case for the U.S. not to walk away from Ukraine, and how the message was received.

"I will only note that President Biden reinforced his view that the United States, standing with Ukraine on an ongoing basis, is in our national security interest," Sullivan responded, adding that "standing up to aggressors and dictators and pushing back against their aggression is vital to ensuring that we don't end up getting dragged directly into a war."

-ABC News' Molly Nagle