DHS Threatens to Close San Francisco Airport to International Flights, May 31

Homeland Security Secretary Markwayne Mullin said the Trump administration could halt international flight processing at 14 major US airports, including San Francisco, over disputes with local law enforcement. The threat targets sanctuary cities that Mullin says are not assisting federal immigration officials. Industry groups warned the move would cause widespread travel chaos and economic damage.

Why Mullin Is Threatening the Shutdown

Mullin complained that local police in New Jersey were not helping federal immigration officials enter and exit a detention center. He said he could reassign customs officers from Newark Liberty International Airport and other major hubs. The threat extends to airports in Boston, Denver, Philadelphia, Chicago, Los Angeles, Seattle, and San Francisco.

What Industry Groups Say About the Impact

The US Chamber of Commerce, Airlines for America, National Retail Federation, and US Travel warned of chaos if customs operations halt at major airports. Shutting down all international flights at the 18 airports serving sanctuary cities would cost the economy more than $70 billion and affect 68 million international passengers. Industry groups said changes at a few gateway airports would ripple across the entire air transportation system.

What Airline Executives Believe Will Happen

Three airline executives told Reuters on Friday they did not believe the Trump administration would immediately move ahead with restrictions. The New York Times reported that Mullin’s proposal could block hubs like Boston, New York, and Los Angeles from accepting international flights. The White House did not immediately comment on the threat.

Final Thoughts

Mullin’s threat targets sanctuary cities over immigration enforcement disputes. Industry groups estimate a $70 billion economic hit and 68 million affected passengers if the plan proceeds. Airline executives expect the restrictions unlikely to happen immediately.

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