Early Life and Education
Kristi Lynn Arnold Noem was born on November 30, 1971, in Watertown, South Dakota. She was raised on a family farm and ranch in rural Hamlin County. Her upbringing in an agricultural community would later become a central part of her political identity and public image.
Noem attended Northern State University in Aberdeen but left college before completing her degree. In 1994, tragedy struck when her father was killed in a farming accident. Following his death, Noem returned home to help run the family farm and ranch while also managing the family's hunting lodge and restaurant.
Balancing business responsibilities with raising a young family, she later returned to school and completed coursework through several institutions, ultimately earning a bachelor's degree in political science from South Dakota State University in 2012 while serving in Congress.
South Dakota Legislature
Noem entered politics in 2006 when she was elected to the South Dakota House of Representatives. Representing District 6, she served four years in the state legislature.
During her time in Pierre, she focused on agricultural issues, taxation, and property rights. Her background as a rancher and small business owner helped her build support among rural voters, and she quickly emerged as a rising figure within the South Dakota Republican Party.
Her time in the state legislature also helped establish her political network and prepared her for a run for federal office.
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U.S. House of Representatives
In 2010 Noem ran for South Dakota's at-large seat in the U.S. House of Representatives. The race was closely watched, and she narrowly defeated incumbent Democratic Representative Stephanie Herseth Sandlin in the general election.
She took office in January 2011 as South Dakota's sole member of the House. During her four terms in Congress, Noem aligned with conservative Republicans on issues including taxation, federal spending, gun rights, and regulatory policy.
She served on several committees and became a visible advocate for agricultural interests and rural economic issues. Over time she also built a national profile within the Republican Party, frequently appearing on cable news programs and at conservative political events.
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Noem served in the House until 2019, when she left Congress to assume the governorship of South Dakota.
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Governor of South Dakota
In 2018 Noem ran for governor of South Dakota after Republican Governor Dennis Daugaard reached his term limit. She won the election and became the first woman elected governor of South Dakota.
Her tenure as governor drew national attention during the COVID-19 pandemic. Unlike many other governors, Noem resisted imposing statewide lockdowns and mask mandates, arguing that individuals and businesses should make their own decisions about public health precautions.
The approach made her a popular figure among many conservatives while drawing criticism from public health officials and political opponents.
During her time as governor, Noem also focused on tax policy, agricultural issues, and economic development in South Dakota. She was reelected to a second term in 2022.
Secretary of Homeland Security
In early 2025 President Donald Trump selected Noem to serve as the United States Secretary of Homeland Security. The position placed her in charge of one of the federal government's largest agencies, responsible for border security, immigration enforcement, disaster response, cybersecurity, and the Secret Service.
Her tenure at the Department of Homeland Security was dominated by the administration's aggressive immigration policies, including expanded deportation operations and increased enforcement along the U.S.–Mexico border.
Noem's leadership at DHS was frequently controversial and attracted intense scrutiny from lawmakers. Critics questioned the department's handling of several high-profile immigration enforcement operations, including incidents involving civilian deaths during federal raids. Members of Congress also examined a multimillion-dollar public advertising campaign encouraging undocumented immigrants to voluntarily leave the United States.
Removal from Cabinet
In March 2026, President Trump removed Noem from her position as Secretary of Homeland Security following months of political tensions and public criticism surrounding her leadership of the department. She was replaced by Senator Markwayne Mullin.
The president announced that she would instead take on a new role as Envoy for the Shield of the Americas, a diplomatic initiative focused on regional security cooperation throughout the Western Hemisphere.
Her departure made her the first Cabinet secretary to leave the administration during Trump's second presidential term.
Personal Life
Kristi Noem is married to Bryon Noem, an insurance agent and businessman. The couple has three children and has maintained close ties to their ranching roots in South Dakota.
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