Department of Homeland Security (DHS) Secretary Markwayne Mullin has signaled potential consequences for sanctuary cities that refuse to cooperate with federal immigration enforcement, including the possibility of revoking customs processing at their international airports.
Immediate Action & Core Facts
Mullin’s Warning: During a Fox News interview, Mullin suggested that sanctuary cities with international airports—such as Los Angeles (LAX) and New York (JFK)—could lose customs processing authority if they continue to limit cooperation with federal immigration authorities. He argued that allowing such cities to process international travelers while ignoring immigration laws outside airports is inconsistent.
Legal and Political Context: Mullin claimed sanctuary city policies are unlawful and indicated that DHS may prioritize resources for jurisdictions willing to partner with federal agencies. The remarks come amid ongoing tensions between local and federal authorities over immigration enforcement.
Deeper Dive & Context
Policy Implications
Mullin’s comments follow the creation of a specialized DOJ enforcement unit in January 2025 to target sanctuary jurisdictions. The unit warns of legal challenges for local officials who impede federal immigration enforcement. A House GOP probe last year investigated major sanctuary cities, criticizing policies that restrict cooperation with Immigration and Customs Enforcement (ICE).
Political Reactions
Mullin framed his stance as a response to Democratic efforts to defund Customs and Border Patrol (CBP), arguing that sanctuary cities should not receive federal resources if they refuse to enforce immigration laws. He emphasized that DHS will prioritize partnerships with cooperative jurisdictions.
Operational Concerns
The remarks have raised concerns about potential disruptions at major airports, where millions of travelers pass through customs monthly. Critics argue that revoking customs authority could create logistical challenges and economic impacts for affected cities.
Legal Debates
The legality of sanctuary city policies remains contested. Supporters argue they protect immigrant communities, while opponents, including Mullin, contend they undermine federal law. The DHS has not yet announced specific actions but has indicated a review of enforcement strategies.
Background Context
Mullin’s comments come amid broader DHS challenges, including funding lapses and staffing shortages that have led to long wait times at airports. His predecessor, Kristi Noem, was recently ousted, adding to the department’s instability.