President-elect Donald Trump has selected South Dakota Gov. Kristi Noem as his next secretary of the Department of Homeland Security, according to two people familiar with the selection.

Throughout the country, Noem’s focus on the border has endeared her to the Republican grass roots. The Shelby County GOP, in Tennessee, honored Noem at its annual Lincoln Day dinner over the summer, said the local party’s chairman, Cary Vaughn, because, “She’s a great zealot and advocate for fighting for border control.”

Kristi Noem visited key senators Wednesday in her bid to become secretary of Homeland Security in the upcoming Trump administration, stressing her support for President-elect Donald Trump’s tough-on-immigration stances.