Markwayne Mullin Sworn In as DHS Secretary After 54-45 Senate Confirmation; Immediately Pauses WEXMAC-TITUS Warehouse Detention Buildout

The U.S. Senate confirmed Sen. Markwayne Mullin (R-OK) as the ninth Secretary of the Department of Homeland Security on March 23, 2026, in a 54-45 vote. Trump swore Mullin in the following day, March 24, in an Oval Office ceremony administered by Attorney General Pam Bondi, with Mullin’s wife Christie and their six children present. Mullin replaced Kristi Noem, whom Trump had fired March 5, 2026 (see 2026-03-05–trump-fires-noem-nominates-mullin-dhs-secretary).

Confirmation Vote

Two Democratic senators crossed party lines to support Mullin: John Fetterman (D-PA) and Martin Heinrich (D-NM). Sen. Rand Paul (R-KY) was the sole Republican to vote against confirmation. Senate Minority Leader Chuck Schumer had declared himself “a resounding NO” on the day of Mullin’s nomination. The 54-45 tally preserved the Trump administration’s pattern of narrow, near-party-line cabinet confirmations.

Confirmation Hearing Commitments

During his hearing, Mullin made several commitments that distinguished his public posture from Noem’s:

• ICE redeployment: Stated “I would love to see ICE become more a transport than on the front line” — a narrower operational conception than Noem’s street-level enforcement doctrine.
• Judicial warrants: Pledged that ICE officers would obtain judicial warrants before entering private property, with limited exceptions. This was a reversal of Noem-era administrative-warrant practice.
• Apology for Pretti characterization: Apologized for having earlier called Alex Pretti, the U.S. citizen killed by CBP agents in Minneapolis on January 24, 2026, a “deranged individual” — acknowledging “I shouldn’t have said that.”

Mullin declined to affirm that Trump lost the 2020 election, saying only that Biden had been sworn into office, and indicated openness to deploying ICE agents to polling places (“if you’re not a citizen, you shouldn’t be voting anyway”) — a stance that election administrators flagged as a statutory and operational concern. (Source: Democracy Docket.)

Immediate Policy Actions (Days 1-9)

Within the first two weeks of taking office, Mullin announced or implemented at least five substantial departures from Noem-era practice:

1. Pause on WEXMAC-TITUS Warehouse Acquisitions

Mullin ordered an immediate pause on all ICE warehouse-to-detention conversion projects, citing reports that his predecessor’s DHS had dramatically overpaid for facilities. As of April 1, 2026, 11 warehouses had been purchased across Michigan, Arizona, Georgia, Maryland, New Jersey, Pennsylvania, Texas, and Utah for a combined $1.074 billion — the core asset cohort of the WEXMAC-TITUS Navy-procurement-bypass mechanism. One Utah facility had reportedly cost $145 million despite being valued at $97 million. Mullin instructed his team to investigate each of the 10 active conversion efforts before any further commitments. This is the first federal-administrative rollback of the warehouse buildout and is the direct operational trigger for the scale-backs documented in 2026-04-17–stateline-dhs-compromises-warehouse-detention-centers. For the asset-level accounting of the affected cohort, see themes/wexmac-titus-warehouse-census.md.

2. Contract Approval Threshold Raised from $100,000 to $25 Million

On April 1, 2026, Mullin rescinded Noem’s standing requirement that the Secretary personally approve DHS contracts of $100,000 or more — a policy that had centralized small-dollar procurement in Noem’s office. The new threshold raises the secretarial-review line to $25 million, with DHS deputy secretary approval required above that amount and component leaders approving below it. The change returns procurement to a more conventional distribution of authority and unwinds the bottleneck Noem had used to personally adjudicate small vendor selections including, reportedly, the Safe America Media ad-campaign contract.

3. Deportation-Flight Program Pause

Mullin halted DHS plane usage for deportations, reversing Noem’s acquisition of five aircraft plus a $70 million luxury-jet conversion program. Rep. Mark Amodei (R-NV) confirmed to CNN: “We want to see that analysis, that cost benefit analysis.” The pause covers both the self-operated fleet Noem had championed (which internal projections had suggested could double monthly deportation numbers) and the leased-flight pipeline to CECOT.

4. Sanctuary-City Airport Screening

Mullin announced plans to reduce customs screening at airports in sanctuary cities, citing LAX and JFK as potential targets. This introduces a new coercion mechanism aimed at municipal noncompliance with federal immigration enforcement — shifting the lever from enforcement-density-on-streets (Noem’s Operation Metro Surge model) to infrastructure-of-travel consequences.

5. FEMA-to-States Devolution

During an April visit to North Carolina, Mullin advocated transferring emergency-response authority from FEMA to state and local agencies. Simultaneously he approved $103 million in additional federal funding for North Carolina hurricane recovery. The devolution framing aligns with Project-2025 disaster-response restructuring proposals.

GOP Pressure for Broader Rollback

Republican lawmakers publicly pressed Mullin to reverse more of Noem’s actions:

• Rep. Carlos Gimenez (R-FL): “Review everything that was being done under Secretary Noem.”
• Rep. Brian Fitzpatrick (R-PA): Introduced a bipartisan bill requiring judicial warrants for ICE arrests and mandating agents remove masks during operations — a direct repudiation of Noem-era doctrine.

The visibility of GOP-side dissatisfaction indicated that Noem’s tenure had alienated members of her own party to the degree that a Mullin-led reset had both intra-coalition permission and outside pressure behind it.

Mullin’s Framing of the Transition

In an April 16 CNBC interview, Mullin drew a direct contrast with Noem: “We do have a different leadership style… We want to make sure people understand that we’re here working for the people, not against you.” The public posture was managerial and deferential in tone — a deliberate departure from Noem’s combative performance style.

Significance

Operational trigger for WEXMAC-TITUS rollback: Mullin’s warehouse-acquisition pause is the direct administrative cause of the April-2026 scale-backs at Williamsport MD, Surprise AZ, and Social Circle GA (2026-04-17–stateline-dhs-compromises-warehouse-detention-centers). The prior rollbacks — Merrimack NH scuttling (pre-Noem-firing), the Choctaw Nation’s March 2026 purchase of the Durant OK warehouse, and city-level resistance at Social Circle — were site-specific or private-party actions. Mullin’s pause is the first federal-administrative signal that the WEXMAC-TITUS buildout has entered a contraction phase rather than a growth phase.

Procurement centralization unwound: The $100,000-to-$25-million contract-review threshold change explicitly dismantles one of the mechanisms through which the Noem-Lewandowski shadow-governance structure had exercised granular control over DHS procurement. Whether the unwinding represents genuine reform or merely a delegation of the same practices to the deputy-secretary and component-head levels is an open question.

Continuity at the policy core: Despite the tactical shifts, Mullin’s confirmation hearing statements on sanctuary-city airport screening and ICE-at-polling-places indicated the administration’s strategic objectives — deterrence through infrastructure pressure, election-administration intimidation, Miller-architected enforcement escalation — remain intact. The transition from Noem to Mullin appears to represent a change in operational style and procurement discipline rather than a change in capture-lane direction.

Senate vacancy: Mullin’s departure from the Senate opens a seat that Oklahoma Governor Kevin Stitt will fill by appointment, with implications for the narrow Republican Senate majority.

Related Timeline Entries

• 2026-03-05–trump-fires-noem-nominates-mullin-dhs-secretary — Noem firing and Mullin nomination
• 2026-03-05–trump-fires-noem-dhs-mullin-appointed — parallel coverage of the firing
• 2026-03-06–noem-firing-aftermath-dhs-tenure-controversies — Five-controversy post-firing catalog
• 2026-03-07–shield-of-americas-summit-trump-doral-cartel-coalition — Noem’s formal debut as Shield of the Americas envoy
• 2026-04-17–stateline-dhs-compromises-warehouse-detention-centers — The Stateline exposé Mullin’s pause made possible
• 2026-04-20–wypr-exposes-williamsport-wexmac-contracting-method — Williamsport-specific WEXMAC disclosure
• 2026-03-29–warren-raskin-letter-52-lawmakers-detention-contractors — Congressional-oversight pressure on the same detention contractors

Related Research

• mullin-markwayne — Actor profile
• noem-kristi — Actor profile (predecessor)
• See themes/wexmac-titus-warehouse-census.md for asset-level accounting of the warehouse cohort Mullin paused
• epic-inv1-wexmac-titus-detention — Parent investigation