Trump fired Kristi Noem as DHS Secretary on March 5 and named Sen. Markwayne Mullin (R-OK) as her replacement, effective March 31. The firing came after two days of combative congressional hearings in which Noem was grilled about a $220 million DHS advertising campaign that prominently featured herself — including footage of her riding a horse. Noem told Congress that Trump had approved the campaign. Trump told Reuters he "never knew anything about it." He was reportedly "mad as a murder hornet." There were other allegations of outrageous overspending and cushy self-dealing. Rumors of an affair between Noem and Corey Lewandowski, her top aide, were reported as another factor.
Noem was given a new title: special envoy for "The Shield of the Americas," a security initiative nobody had heard of before Thursday.
1. She Had It Coming (Sen. John Kennedy, congressional critics)
A $220 million vanity campaign, an eight-day-old contractor, and she told Congress the president signed off on it. He didn't.
The contradiction under oath was the kill shot. Noem told lawmakers Trump had approved the ad campaign. Trump publicly denied it. In Washington, you can survive a scandal, but you cannot survive putting words in the president's mouth and getting caught. Sen. John Kennedy's exchange with Noem about the campaign was so pointed that Trump was reportedly furious after watching it.
The contracts stink. One went to a company incorporated eight days before receiving the award. Noem couldn't explain why during testimony. ProPublica found a firm with ties to Noem secretly got a piece of the campaign. Bloomberg traced subcontractor payments to firms that had worked on Trump's 2024 campaign while Lewandowski advised the campaign's senior leadership. Democrats are now probing the companies for ties to both Noem and Lewandowski.
The optics were indefensible. A $220 million taxpayer-funded campaign featuring the DHS Secretary riding a horse while detention facilities had measles outbreaks and DHS officers were conducting controversial raids in Minnesota. The money, the self-promotion, and the Lewandowski connections made it impossible for the White House to defend.
2. This Is Classic Trump Housecleaning (Axios, political analysts)
She wasn't fired for policy failures — she was fired for embarrassing the president on TV. That's how this White House works.
Notice what Trump didn't fire her for. Not for the aggressive ICE raids. Not for the measles at Camp East Montana. Not for the detention of children. Not for any of the things her critics on the left wanted her fired for. He fired her because she spent $220 million on ads featuring herself and told Congress he approved it when he didn't.
The "special envoy" title is the tell. "Shield of the Americas" didn't exist before Thursday. It's a face-saving assignment — the Washington equivalent of being sent to a regional office. Noem gets to say she's still in the administration. Trump gets to say he didn't technically fire her. Everyone knows what happened.
Lewandowski's departure confirms the firing is legit. He's leaving DHS too. When the aide goes with the principal, the problem was bigger than one bad hearing. The affair rumors, the contract connections, the ad campaign — Lewandowski was at the center of all of it. Cleaning house means cleaning the whole house.
3. The Real Scandal Is What She Did in Office (Immigration advocates, Democratic lawmakers)
Please forget the ads. She oversaw the largest expansion of immigration detention in US history, and nobody in the White House cared until the money got embarrassing.
Noem's DHS built Camp East Montana in two months, and it now has a measles outbreak. She oversaw ICE raids that drew bipartisan criticism, including operations on college campuses and in communities with no criminal targets. The detention population grew under her watch. None of this got her fired.
Questions about Minnesota raids barely registered. Congressional Democrats grilled Noem about DHS officers' aggressive tactics in Minnesota — but that line of questioning didn't move the White House. What moved the White House was the money. $220 million in questionable contracts is a number that shows up in attack ads. Dead migrants in tent cities don't get the same traction.
That's the takeaway for whoever comes next. Markwayne Mullin will inherit DHS knowing exactly what gets you fired and what doesn't. Policy brutality is tolerable. Financial embarrassment is not. The ad campaign wasn't the worst thing Noem did at DHS. It was just the thing that made Trump look bad.
Where This Lands
Noem is out. So is Lewandowski. The $220 million ad campaign is under congressional investigation. And Markwayne Mullin, a former MMA fighter and senator from Oklahoma, takes over a department that's running the largest detention operation in American history while fighting a war. He gets the job because Noem forgot the first rule of working for Trump: you can do almost anything, as long as you don't embarrass him on camera.
Sources
- NPR on Noem firing: https://www.npr.org/2026/03/05/nx-s1-5667546/kristi-noem-homeland-security-fired
- NPR on Mullin replacement: https://www.npr.org/2026/03/06/nx-s1-5737623/trump-fires-kristi-noem-as-head-of-dhs-names-oklahoma-senator-as-her-replacement
- CBS News on Noem out: https://www.cbsnews.com/news/kristi-noem-out-as-secretary-of-homeland-security-markwayne-mullin/
- Newsweek on Trump denying ad approval: https://www.newsweek.com/trump-noem-border-security-ad-campaign-reuters-11628737
- New Republic on 8-day-old company: https://newrepublic.com/post/207381/kristi-noem-explain-company-ad-campaign
- Bloomberg on ad blitz firms: https://www.bloomberg.com/news/features/2026-03-06/noem-dhs-ad-blitz-benefits-firms-linked-to-trump-campaigns
- ProPublica on Noem-tied firm: https://www.propublica.org/article/kristi-noem-dhs-ad-campaign-strategy-group
- NewsNation on $220M ad campaign: https://www.newsnationnow.com/politics/kristi-noem-horseback-ad-dhs/
- Gateway Pundit on Lewandowski departure: https://www.thegatewaypundit.com/2026/03/corey-lewandowski-leave-department-homeland-security-after-noem/
- NBC News on Democrats probing contracts: https://www.nbcnews.com/politics/trump-administration/noem-lewandowski-democrats-probing-companies-220-million-ad-contract-rcna262156
- The Hill on Kennedy hearing: https://thehill.com/homenews/senate/5764784-kristi-noem-kennedy-ad-campaign/
- ABC News on Trump frustration: https://abcnews.com/Politics/trump-privately-expresses-frustration-noem-after-senate-hearing/story?id=130794961
- Al Jazeera on why Noem was fired: https://www.aljazeera.com/news/2026/3/6/why-did-trump-remove-kristi-noem-as-dhs-secretary-who-is-markwayne-mullin
- Washington Post on removal: https://www.washingtonpost.com/climate-environment/2026/03/05/kristi-noem-fired-trump-dhs/
- Axios on Noem out: https://www.axios.com/2026/03/05/kristi-noem-trump-ice-dhs