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President-elect Trump announced that billionaire Elon Musk and former GOP presidential candidate Vivek Ramaswamy will lead the Department of Government Efficiency.

Trump said that the pair will work together to "dismantle Government Bureaucracy, slash excess regulations, cut wasteful expenditures, and restructure Federal Agencies."

"It will become, potentially, ‘The Manhattan Project’ of our time," the announcement on Tuesday evening said. "Republican politicians have dreamed about the objectives of ‘DOGE’ for a very long time."

The president-elect said that Musk and Ramaswamy will provide "advice and guidance from outside of Government, and will partner with the White House and Office of Management & Budget to drive large scale structural reform, and create an entrepreneurial approach to Government never seen before."

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Vivek Ramaswamy and Elon Musk

Vivek Ramaswamy and Elon Musk. The pair have been tapped to lead Trump's Department of Government Efficiency. (Getty Images/AP Images)

Trump said that the agency will be focused on creating a more efficient U.S. government that looks to make "life better for all Americans."

"Importantly, we will drive out the massive waste and fraud which exists throughout our annual $6.5 Trillion Dollars of Government Spending. They will work together to liberate our Economy, and make the U.S. Government accountable to 'WE THE PEOPLE.'" Trump said. 

"Their work will conclude no later than July 4, 2026 - A smaller Government, with more efficiency and less bureaucracy, will be the perfect gift to America on the 250th Anniversary of The Declaration of Independence. I am confident they will succeed!"

Republican presidential candidate, former U.S. President Donald Trump

Republican presidential candidate former President Trump greets Vivek Ramaswamy while speaking during a campaign rally in New Hampshire.  (Brandon Bell/Getty Images)

In a X post, Ramaswamy reacted to his appointment.

"We will not go gently, Elon Musk," he wrote in the post.

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Ramaswamy has been a vocal supporter of Trump after he suspended his presidential campaign in Jan. 24.

In a statement on X, the founder Roivant Sciences, a pharmaceutical company, said that he would be dropping out of the Ohio Senate appointment.

"And yes, this means I’m withdrawing myself from consideration for the pending Senate appointment in Ohio," he wrote. "Whoever Governor DeWine appoints to JD’s seat has some big shoes to fill. I will help them however I can."

Election 2024 Trump

Elon Musk jumps on the stage as Republican presidential nominee former President Trump speaks at a campaign rally at the Butler Farm Show, Oct. 5, in Butler, Pa.  (AP Photo/Evan Vucci)

Similarly, Musk has been a key component to Trump's campaign – with the tech entrepreneur crisscrossing key battleground states leading up to the 2024 election.

In response to his position in Trump's White House, Musk wrote: "Threat to democracy? Nope, threat to BUREAUCRACY!!!"

The world's richest man, who said he voted for former Democratic presidential candidates including President Biden in the past, endorsed Trump this summer following the first assassination attempt on the 45th president on July 13. 

Donald Trump in a bluue suit and red tie pumps his fist in the air and looks up

Republican presidential nominee former President Trump pumps his fist as he arrives to speak at a campaign event at Nassau Coliseum, Sept.18, 2024, in Uniondale, N.Y. (AP Photo/Alex Brandon)

The slew of Trump Cabinet positions came quickly after the president-elect's landslide victory against Vice President Kamala Harris.

Trump has selected top Republicans, with the president-elect expected to select Florida Sen. Marco Rubio to serve as his Secretary of State and South Dakota Gov. Kristi Noem as secretary of Homeland Security. 

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In addition, Rep. Elise Stefanik, R-N.Y., has been tapped for United Nations ambassador and former Arkansas Gov. Mike Huckabee as ambassador to Israel.