Markwayne Mullin's DHS Tenure

The story so far

As of September 2, 2026

Markwayne Mullin’s tenure at Homeland Security has already paired a hard-edged enforcement push with a stark reminder about the department’s own tools. He announced a New York sweep, Operation Rotten Apple, in which Immigration and Customs Enforcement arrested about 2,100 people with criminal records over 30 days. The next day, the Coast Guard jet that carries him lost an engine and diverted to Reagan National, putting attention on the aircraft DHS relies on to move its leadership and manage crises.

The aircraft was a C-37A, the military version of a Gulfstream V used to transport senior officials. En route from Georgia to the Washington area, the crew told controllers the right engine had failed, that there were 14 people on board and roughly two and a half hours of fuel, and requested an immediate landing at Ronald Reagan Washington National Airport. They touched down safely around 1:35 p.m., and Mullin publicly thanked the pilots for a calm, professional landing.

That safe landing drops into the middle of a live fight over the age and upkeep of the Coast Guard’s executive jet fleet. DHS has described the jet as more than 20 years old and beyond typical service life, first seeking about $50 million to replace it and later shifting to a plan for two Gulfstream G700s at roughly $200 million. Lawmakers questioned why replacing executive transport should outrank modernizing search and rescue aircraft that often date to the 1980s and 1990s. An in-flight engine failure on the secretary’s own plane ties those threads together in a way abstractions have not.

What is at stake now is the safety and reliability of the aircraft that carry the people running homeland security, and how DHS sets priorities across an aging fleet while pressing visible enforcement campaigns. The facts that explain the rest are simple: a large arrest total Mullin is using to define his early months, and a single-engine emergency that exposed how old the transport aircraft have become. The next moves in this story are about maintenance, replacement, and how DHS balances those choices against frontline missions.