TL;DR

• Firing of Kristi Noem On March 6, 2026, President Donald Trump dismissed Kristi Noem as Secretary of Homeland Security. The decision was announced via Truth Social and a White House statement. Trump cited "lack of results" on border security and immigration enforcement as the primary reason. Noem, former South Dakota governor, had faced internal criticism for delays in implementing mass deportation plans and for perceived softness on sanctuary cities. Appointment of Markwayne Mullin Trump immediately named Senator Markwayne Mullin (R-OK) as the new Secretary. Mullin, a Cherokee Nation member and former professional MMA fighter, has been a vocal advocate for strict border policies. He co-sponsored legislation to expand border wall construction and increase ICE funding. Trump praised Mullin as a "fighter" who will "get the job done" on deportations and border wall completion. Immigration Row Context The firing follows months of tension over immigration. Trump promised the "largest deportation operation in American history" during his 2024 campaign. Noem's tenure saw record migrant encounters but slower-than-expected removals due to legal challenges and resource constraints. Congressional Republicans and conservative media criticized her for not moving fast enough. Reactions
• Republicans welcomed Mullin’s appointment, calling him a "proven conservative" on immigration.
• Democrats condemned the move as "chaotic" and accused Trump of prioritizing loyalty over competence.
• Noem issued a brief statement thanking Trump and pledging to support the administration from outside. Broader Implications The change signals a harder line on immigration ahead of midterms. Mullin is expected to push aggressive enforcement, including expanded use of Title 42-style expulsions if legally viable. The shake-up also reflects Trump’s willingness to replace cabinet members who do not deliver rapid results.