President-elect Donald Trump plans to appoint South Dakota’s Republican governor, Kristi Noem, as secretary of the Department of Homeland Security, according to four sources familiar with the decision.

As Secretary of Homeland Security, Noem would oversee a number of key federal agencies, including U.S. Immigration and Customs Enforcement, U.S. Customs and Border Protection, the Federal Emergency Management Agency (FEMA), the U.S. Secret Service, TSA and the Coast Guard.

Noem, 52, has voiced her support for the president-elect’s tough immigration policies and defended her fellow Republican governors in their efforts to crack down on migrants in their states.

In January, for example, she said in remarks that there had been an “invasion” at the U.S.-Mexico border and that her administration was considering helping Texas deter immigration at its southern border by sending security personnel and razor wire into the state. In response to her comments, members of the Oglala Sioux tribe in South Dakota excluded her from their reservation.

Noem has criticized President Joe Biden’s handling of the border, echoing Trump’s arguments that violent criminals are pouring into the country.

“He’s ignoring federal law and allowing people who are incredibly dangerous into this country,” she said in an interview on NBC’s “Meet the Press” in June. “And this week I think we had four different people who were attacked, raped or murdered by illegal immigrants coming over our open border. And that can’t keep happening.”

When asked in the same interview about Trump’s possible plans to pardon the January 6 rioters who were convicted, she dodged the question and said that would be his prerogative.

“I believe that when Donald Trump returns to the White House and is in charge of this country, we will have incredible opportunities to show that the people of this country will be safer, that we will have law and order. back on our streets,” she said. “If you look at some of the most violent areas of our country, they are often Democratic-run cities, sanctuary cities with an open border.”

Noem was seen as a possible vice presidential running mate for Trump this cycle, but she was haunted by her admission in her book published in the spring that she once shot and killed her dog.

“I would say this was a story from 20 years ago, where I protected my children from a vicious animal,” she said on “Meet the Press.” “So we discussed that, and any mother in situations where you have an animal that is viciously killing livestock and attacking people, it’s a difficult decision.”

Noem has been governor of South Dakota since 2019 and previously served in the House of Representatives from 2011 to 2019 and in the State House from 2007 to 2011.

Like Trump’s other allies, Noem had expressed support for his efforts to overturn the 2020 election results. In separate interviews on CNN in April and May of this year, she would not say whether she would have certified that election and declined to say whether then-Vice President Mike Pence acted appropriately in certifying Biden’s victory.