Following a contentious confirmation battle, the U.S. Senate voted 54–45 on Monday to officially name Markwayne Mullin confirmed as DHS Secretary, tasking the former MMA fighter and Oklahoma businessman with resolving a partial department shutdown and overhauling federal border operations. The vote, which largely followed party lines, positions Mullin to lead the government’s third-largest department at a moment of significant fiscal and administrative pressure.
Mullin, a staunch ally of President Donald Trump, transitions from the legislative branch to lead the government’s third-largest department at a moment of significant internal and external pressure. The vote largely followed party lines, though Democrats John Fetterman (PA) and Martin Heinrich (NM) broke ranks to support the nomination, providing the margin needed to overcome Republican Chairman Rand Paul’s sole GOP “no” vote.
A Turbulent Handover
Mullin’s arrival follows the abrupt firing of former Secretary Kristi Noem, whose tenure ended amid a public backlash over the administration’s aggressive immigration tactics and a high-profile controversy regarding department advertising.
The confirmation process was notably combative. During hearings before the Senate Homeland Security and Governmental Affairs Committee, Senator Paul challenged Mullin’s temperament, citing past “anger issues” and heated exchanges with labor leaders and colleagues. Mullin, however, sought to project the image of a “steady hand,” famously stating during his testimony:
“My goal in six months is that we’re not in the lead story every single day. My goal is for people to understand we’re out there, we’re protecting them, and we’re working with them.”
History and Background
Before entering the executive cabinet, Mullin built a career defined by both his business roots and a pugilistic political style:
- Business Roots: A member of the Cherokee Nation, Mullin initially gained prominence in Oklahoma for running his family’s plumbing business before being elected to the U.S. House in 2012.
- Senate Career: Elected to the U.S. Senate in 2022, he quickly became a key member of the Republican leadership team and a frequent surrogate for President Trump.
- Unconventional Path: Mullin’s resume includes a brief stint as a professional mixed martial arts (MMA) fighter, a background that critics often point to when discussing his aggressive approach to political discourse.
What Happens Next
Mullin inherits a department in the midst of a partial shutdown that began on February 14. His immediate “To-Do” list is formidable:
- Ending the Shutdown: Mullin must negotiate with a divided Congress to secure funding for agencies like the TSA and FEMA, where employees have been working without pay for weeks.
- Airport Security Crisis: With TSA call-outs hitting record highs, President Trump has already ordered ICE agents to assist at airports. Mullin will need to manage this transition while reducing wait times during the busy spring travel season.
- Refining Immigration Tactics: While Mullin remains committed to the administration’s mass deportation goals, he signaled during his confirmation that he would reverse guidance allowing agents to enter homes without judicial warrants. He has expressed a desire for ICE to move toward a “transport” role rather than being the “front line” in civilian areas.
- FEMA Restructuring: Mullin pledged to appoint a permanent FEMA director and to end “micromanagement” of disaster relief funds, though he remains under fire from environmental groups for his past skepticism about climate change.
Mullin is expected to be formally sworn in by the end of the week, officially vacating his Oklahoma Senate seat and triggering an appointment process by Governor Kevin Stitt to fill the vacancy.
With Markwayne Mullin’s confirmation as Secretary of Homeland Security now finalized, Governor Kevin Stitt has moved quickly to fill the sudden vacancy in Oklahoma’s federal delegation. Reports indicate that Stitt has selected Alan Armstrong, an oil and gas executive and former CEO of Williams Companies, to serve as the interim U.S. Senator.
The appointment follows weeks of speculation and high-level discussions, including a meeting between Governor Stitt and President Trump to coordinate the transition.
The Rules of the Appointment
Under a 2021 Oklahoma law authored by Senate President Pro Tem Lonnie Paxton and House Speaker Kyle Hilbert, the process for filling this vacancy comes with strict parameters:
- Party Consistency: The appointee must have been a registered member of the same party as the predecessor (Republican) for at least five years.
- No “Leg Up”: To prevent giving an appointee the “gift of incumbency,” the individual must sign a sworn oath promising not to run for the seat in the upcoming election.
- Short Tenure: Armstrong—or any appointee—will only hold the seat until the results of the November 3, 2026, general election are officially certified.
Why Alan Armstrong?
By selecting Armstrong, Stitt fulfills his pledge to avoid tapping members of Oklahoma’s current congressional delegation, such as Representative Kevin Hern or Representative Stephanie Bice, which would have triggered further vacancies and special elections. Armstrong provides a “placeholder” presence with deep ties to Oklahoma’s energy sector, ensuring the state maintains its influence on the Senate Energy and Natural Resources Committee during this transition.
The Race for the Full Term
While Armstrong will hold the seat temporarily, the battle for the full six-year term is already heating up. Because Mullin was originally set to run for re-election this year, the seat was already on the 2026 ballot.
- Kevin Hern Steps In: Representative Kevin Hern has officially announced he will run for the seat rather than seek re-election to his House post. Early polling shows him as a front-runner in the Republican primary.
- Other Potential Contenders: While Governor Stitt and Stephanie Bice have both publicly declined to run for the seat, other names frequently mentioned include State Senator Dusty Deevers and former State Senator Nathan Dahm.
- The Timeline: Candidates have a narrow window to finalize their plans, as the official filing period begins in early April. The primary election is scheduled for June 16, 2026.
As Mullin prepares to tackle the DHS shutdown and border security in Washington, Oklahoma voters are now looking at a high-stakes primary that will determine the long-term future of this Senate seat.
– Oklahoma Senate Pro Tem Lonnie Paxton, R-Tuttle, today released the following statement after the United States Senate confirmed Markwayne Mullin as Secretary of the U.S. Department of Homeland Security.
“Today is a proud day for Oklahoma,” Pro Tem Paxton said. “Markwayne Mullin has long been a strong voice for our state and our nation, and his confirmation as Secretary of Homeland Security is a testament to his leadership, work ethic and commitment to public service. As an Oklahoma native, a successful businessman and a proven conservative leader, he understands the importance of protecting our communities while ensuring government works effectively for the people it serves.
“The Department of Homeland Security plays a critical role in safeguarding our nation, and I am confident Secretary Mullin will bring a strong, steady hand to this position during an important time for our country. His experience and leadership will be invaluable as he works to secure our borders, support law enforcement and protect American families.
“On behalf of the Oklahoma Senate, I congratulate Secretary Mullin on this historic achievement. We are proud to see one of our own step into such an important national role, and we look forward to his continued service to our state and nation.”
Senator Tom Woods, R-Westville, issued the following statement Monday after the U.S. Senate voted to confirm President Trump’s nominee for Secretary of Homeland Security, Markwayne Mullin.
“I extend my sincere congratulations to fellow Westville, Oklahoman Markwayne Mullin on his confirmation to serve as Secretary of Homeland Security.
“Secretary Mullin has stood strong with President Trump and will be a tremendous asset to the Cabinet. He will continue to advance the Trump Administration’s America First policies to secure the Southern border and uphold the safety of the American people and the security of the homeland.
“His Oklahoma roots give him firsthand knowledge and experience that will serve him well in his oversight of FEMA and responding to natural disasters across the nation. His vision for FEMA will ensure that local communities are actively involved in response coordination and that rural communities are not left behind.
“While I am proud to know him as family, I also know him as a man of deep conviction, tireless work ethic, and unwavering commitment to serving our state and nation. Those qualities have defined his career in public service, and I am confident they will guide him well in this critical role. I look forward to seeing the positive impact of Secretary Mullin’s leadership on the State of Oklahoma and the United States of America.”
