U.S. Homeland Security Secretary Markwayne Mullin has reportedly warned that the Department of Homeland Security (DHS) could suspend the processing of international travelers and cargo at major airports located in sanctuary cities that refuse to cooperate with the Trump administration’s immigration enforcement policies.
According to sources cited by Reuters, Mullin privately delivered the warning during a meeting with travel industry executives last week. The discussion reportedly included the possibility of limiting or stopping customs and immigration processing operations at some of the busiest airports in the United States, including facilities in Denver, Philadelphia, Chicago, Los Angeles, New York City, Newark, Seattle, and San Francisco.
The comments came amid growing tensions between the federal government and local jurisdictions that have adopted sanctuary city policies. These cities generally limit cooperation with federal immigration authorities, arguing that such measures help protect immigrant communities and improve public safety.
Mullin had previously raised the issue publicly in April while discussing a DHS funding disagreement. However, sources say his recent private remarks to travel leaders suggested the administration may seriously consider taking action against non-cooperative cities.
The Atlantic first reported details of Mullin’s conversation with travel executives, highlighting concerns within the airline and tourism industries over the potential economic and logistical consequences of such a move. Industry experts warn that suspending international passenger and cargo processing at key airports could disrupt global travel, delay shipments, and impact local economies heavily dependent on international commerce and tourism.
The Trump administration has continued to push aggressive immigration policies as part of its broader border security agenda. Sanctuary city policies remain a major point of conflict between federal officials and local governments across the country.
If implemented, the proposed DHS action could significantly affect international travel operations and deepen the ongoing political debate surrounding immigration enforcement in the United States.


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