The Senate made a big move on Saturday, confirming Kristi Noem as the new Homeland Security secretary. This puts a longtime ally of President Donald Trump in charge of an agency that’s set to play a major role in his promised crackdown on immigration. The vote was 59-34, with support from both sides of the aisle.

Noem, who’s been South Dakota’s governor since 2019, is no stranger to politics. She’s also a former state legislator and served four terms in Congress. Now, she’s stepping into a massive role, overseeing agencies like Customs and Border Protection, Immigration and Customs Enforcement, and even the Secret Service.

In a statement after the vote, Noem made it clear where her priorities lie: securing the southern border and fixing what she called a “broken immigration system.” She also promised to back law enforcement efforts to remove “criminal aliens and illegal gangs” from the country.

This confirmation comes as Trump doubles down on his immigration agenda. Earlier in his second term, he declared a national emergency at the southern border and took steps to end birthright citizenship—a move that’s already facing legal challenges.

But immigration isn’t the only issue on Noem’s plate. During her confirmation hearing, she addressed concerns about disaster relief and domestic terrorism, vowing to keep politics out of disaster response and calling attention to the rise of homegrown threats.

Noem’s national profile shot up during the COVID-19 pandemic when she rejected mask mandates and social distancing rules. At one point, she was even considered a potential running mate for Trump. However, she faced backlash last year after revealing in a book excerpt that she’d shot and killed a family dog, describing it as a tough but necessary decision.

With a packed agenda ahead, Noem’s leadership at Homeland Security will undoubtedly be under the spotlight as she works to implement Trump’s vision for immigration and national security.