Why is the head of US homeland security stepping down just months into intense political scrutiny?
The answer lies in a swirl of controversy, criticism, and political pressure.
Kristi Noem, a key figure in Donald Trump’s tough immigration push, will leave her post as head of the US Department of Homeland Security at the end of the month.
Trump has nominated Markwayne Mullin as her replacement—a choice that still needs approval from the United States Senate.
Noem, the former governor of South Dakota, became one of the administration’s most visible cabinet members.
She often posted hard-line messages about immigration on social media. But her tenure grew increasingly controversial.
Critics from both parties pushed back after she labelled two US citizens killed by federal immigration agents in Minneapolis as “domestic terrorists.”
Later videos appeared to challenge that claim.
Immigration Debate Intensifies
They fueled backlash and forced the administration to scale back sweeping immigration raids in Los Angeles, Chicago, and Washington.
Then came another flashpoint: a $220 million advertising campaign prominently featuring Noem.
During congressional hearings, Senator John Kennedy questioned whether Trump approved it.

Noem insisted the process was legal. Trump later responded bluntly: “I never knew anything about it.”
Now the spotlight shifts to Mullin, a former congressman turned senator.
The big question? Can he calm the political storm—or will immigration remain Washington’s most combustible debate?


