Noem was on the short-list to be Trump's running mate.
After a sweeping victory over Vice President Kamala Harris on Nov. 5, President-elect Donald Trump is now set to become just the second ever to serve nonconsecutive terms in office.
Trump has wasted no time in moving to assemble his team for a second term in the White House -- naming Susie Wiles as his chief of staff, Florida Rep. Mike Waltz as his national security adviser and Tom Homan as his "border czar," among other positions.
Inauguration Day is Jan. 20.
Ahead of his return to power in January, Trump is announcing who he wants to fill Cabinet positions and other key roles inside his administration.
They include some of his staunchest allies on Capitol Hill and key advisers to his 2024 campaign.
Here is a running list of the people Trump has selected, or is expected to select, to serve in his administration.
Trump confirmed he has picked South Dakota Gov. Kristi Noem to be his Homeland Security secretary.
Trump said in a statement that Noem will work closely with "border czar" Tom Homan and "will guarantee that our American Homeland is secure from our adversaries."
The role requires Senate confirmation.
Trump has announced that billionaire Elon Musk and Vivek Ramaswamy, a former presidential candidate and ally of the president-elect, will lead a new Department of Government Efficiency.
"Together, these two wonderful Americans will pave the way for my Administration to dismantle Government Bureaucracy, slash excess regulations, cut wasteful expenditures, and restructure Federal Agencies," Trump said in a statement.
The Department of Government Efficiency is not a new government agency. Trump said it will "provide advice and guidance from outside of government" and "partner" with the White House and Office of Management and Budget to drive structural government reform.
Trump has previously said Musk would take a role in his administration as head of a new "government efficiency commission."
Trump has nominated Pete Hegseth to be his defense secretary.
Hegseth is currently a host of "Fox & Friends" as well as an Army combat veteran.
"Nobody fights harder for the Troops, and Pete will be a courageous and patriotic champion of our 'Peace through Strength' policy," Trump said in a statement.
The role requires Senate confirmation.
Trump announced that John Ratcliffe is his pick for director of the Central Intelligence Agency.
The role requires Senate confirmation.
Ratcliffe was a former director of National Intelligence during Trump's first term.
"I look forward to John being the first person ever to serve in both of our Nation’s highest Intelligence positions," Trump said in a statement, adding that Ratcliffe "will be a fearless fighter for the Constitutional Rights of all Americans."
Trump picks John Ratcliffe for CIA director
