What to know about Kristi Noem, the 'border hawk' nominated by Trump to lead DHS

President-elect Trump announced Tuesday he had chosen South Dakota Gov. Kristi Noem to lead the Department of Homeland Security, an agency that addresses border security, emergency relief and cybersecurity.

In his announcement Tuesday evening, Trump emphasized Noem’s moves as governor to send National Guard soldiers to the southern border in Texas, arguing she is "very strong" on border security.

"She will work closely with ‘Border Czar’ Tom Homan to secure the border and will guarantee that our American homeland is secure from our adversaries. I have known Kristi for years and have worked with her on a wide variety of projects. She will be a great part of our mission to make America safe again," Trump said in a statement.

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South Dakota Gov. Kristi Noem gestures as she speaks at the Calvin Coolidge Foundation conference at the Library of Congress Feb. 17, 2023, in Washington, D.C.  (Anna Moneymaker/Getty Images)

Noem said she was "honored and humbled" by the selection.

"With Donald Trump, we will secure the border and restore safety to American communities so that families will again have the opportunity to pursue the American dream," she said.

Noem, a former member of Congress, was elected governor of the state in 2018 and won re-election in 2022. She has three children with her husband, Byron.

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Noem's selection came as a surprise to some political watchers, but a source familiar with the appointment told Fox News Digital Noem had set a precedent for other states by sending National Guard soldiers, rather than more generic assistance, to the border. She also brings experience of other parts of the agency’s mission.

Noem banned TikTok from state-owned devices in 2022, citing the company’s ties to China. Separately, Dakota State University has one of the top cyber units in the country, and cybersecurity is the fastest growing industry in South Dakota, an expansion encouraged by Noem. The governor's website says the state has invested $90 million to equip DSU in expanding cyber programs and allowing high school students to take classes for college credit. The state said last year the sector has added thousands of jobs in a few years and grown by 25%.

Noem has in-depth experience with the Federal Emergency Management Agency (FEMA) because the state has dealt with flooding, including in June when there were record-setting floods in the state. FEMA sparked controversy over its handling of hurricanes this year and is likely to be under significant scrutiny in the months and years ahead.

A group claiming to be from India sits in the shade of the border wall to be picked up by Border Patrol after crossing through the border fence in the Tucson Sector of the U.S.-Mexico border, Aug. 29, 2023, in Organ Pipe Cactus National Monument near Lukeville, Ariz.  (AP Photo/Matt York, File)

With respect to border security, Noem has backed a pause on accepting migrants from terrorist hot spots. As governor, she pledged in 2021 not to take any more migrants from the Biden administration. She is particularly in line with President-elect Trump on border security and prioritizing national security and public safety threats for deportations, a source noted to Fox News Digital.

"My message to illegal immigrants is — Call me when you're an American," she said on Facebook in 2021. 

CLICK HERE FOR MORE COVERAGE OF THE BORDER SECURITY CRISIS

Noem briefly sparked controversy this year when she revealed in a memoir she had shot and killed a family dog that she said had become a danger to people. 

While her appointment was a surprise to some, she has received backing from major figures, including former acting DHS Secretary Chad Wolf.

"Gov. Noem is a fantastic pick," he said. "She has been a successful governor and has been forward-leaning and helping to support the Border security mission with her National Guard. She also has extensive experience working with FEMA on natural disasters. I’m certain she will succeed."

Texas Gov. Greg Abbott, who has been on the front lines of the crisis, said it was an "excellent selection."

"Governor Noem is a border hawk who has worked with me to secure the Texas border," he said on X.

"She has a no nonsense, rule of law approach, that will repair America from the carnage caused by Biden‘s open border policies."

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The pick follows a number of other hawkish appointments to Trump’s administration. This week, he announced former Immigration and Customs Enforcement (ICE) Director Tom Homan will be the "border czar."

On Wednesday, Trump officially announced that Stephen Miller, who spearheaded many immigration policies in Trump’s first term, will serve as assistant to the president and deputy chief of staff for policy and homeland security adviser.