Your Airport's Risk Level

The proposal, championed by DHS Secretary Markwayne Mullin, would use international flight operations as leverage against cities that refuse to cooperate with federal immigration enforcement. It's a dramatic escalation — essentially turning busy airports into bargaining chips in Washington's battle over immigration policy.

Newark Liberty International is the flashpoint. It's one of the busiest international gateways on the East Coast, handling roughly 20,000 arriving passengers every day. If U.S. Customs and Border Protection were to pull back staff there, those passengers would have nowhere to legally clear immigration — causing cascading delays across the entire national system.

Any reduction in Customs and Border Protection operations at major U.S. gateway airports threatens to cause unnecessary chaos throughout the nation's air transportation system.Aviation industry groups, responding to the DHS proposal

Sanctuary vs. Non-Sanctuary Airport Hubs

The ripple effects could go far beyond inconvenienced travelers. Newark also functions as a critical global logistics hub — cargo carrying everything from pharmaceuticals to electronics clears customs there daily. A reduction in CBP staffing wouldn't just delay people; it could snarl supply chains.

Notably, even Transportation Secretary Sean Duffy has expressed reservations about the plan — a rare instance of pushback from within the administration. That internal friction signals that the proposal is far from settled policy.

How Much Do You Know About Sanctuary Cities and Air Travel?

Four quick questions. Test your knowledge.

What is a 'sanctuary city' in the context of federal immigration law?

• A city that offers asylum to refugees — Not quite. Sanctuary cities are simply jurisdictions that limit cooperation with federal immigration enforcement — they don't grant legal asylum status.
• A jurisdiction that limits cooperation with federal immigration enforcement — Correct. These cities and counties restrict how much local law enforcement helps ICE detain or identify undocumented immigrants.
• A city with special visa processing centers — That's not it. The term refers to local non-cooperation policies, not any formal federal designation or facility.

Which agency would have staffing reduced at affected airports under the proposal?

• TSA (Transportation Security Administration) — TSA handles domestic security screening. The agency in question handles arrivals from abroad.
• FAA (Federal Aviation Administration) — The FAA manages air traffic control, not passenger processing or customs.
• CBP (U.S. Customs and Border Protection) — Exactly right. CBP officers clear international arrivals through customs and immigration. Without them, international flights can't legally land and discharge passengers.

Approximately how many U.S. airports could be affected by this proposal?

• 5 or fewer — The scope is actually much broader — extending to major hubs across multiple states.
• Around 18 — Correct. An estimated 18 airports sit in jurisdictions that could be classified as sanctuary cities under the DHS framework.
• More than 50 — The current proposal is more targeted — roughly 18 major airports are in the crosshairs.

Which Trump cabinet member has spoken OUT against the airport flight restriction proposal?

• DHS Secretary Markwayne Mullin — Mullin is the one pushing the proposal, not opposing it.
• Transportation Secretary Sean Duffy — Correct. Duffy's public opposition is notable — it reflects genuine tension within the administration over a policy that could disrupt millions of American travelers.
• Attorney General Pam Bondi — The DOJ has actually been involved in identifying sanctuary jurisdictions — their posture is more aligned with enforcement.

The DOJ has already identified 35 sanctuary jurisdictions as part of a broader immigration crackdown. This airport proposal represents the most aggressive economic lever yet — threatening to disrupt not just residents of those cities, but millions of American travelers who connect through them.

For many international travelers, there is no easy workaround. Rerouting flights through non-sanctuary airports would require airlines to restructure long-haul routes, add connections, and dramatically increase travel times. For cargo, the logistics nightmare could raise costs on imported goods nationwide.

What Could Change for Travelers

Current Operations

• Full CBP staffing Customs Processing At all major gateway airports
• Seamless International Arrivals Clear customs in under 2 hours
• Direct routes to 18+ at-risk hubs
• Global cargo cleared without delay

Under Proposed Restrictions

• Reduced CBP Customs Processing Potential skeleton crews or closures
• Disrupted International Arrivals Long delays or diverted flights
• Reroutes through non-sanctuary airports
• Supply chain slowdowns on imports

Separating Fact from Spin

Sanctuary cities are breaking federal law by refusing to cooperate with ICE.

Verdict: disputed

Courts have generally held that cities cannot be compelled to enforce federal immigration law under the anti-commandeering doctrine established in multiple Supreme Court rulings. The legal status of sanctuary policies remains actively contested.

Restricting CBP staffing would only affect undocumented immigrants, not regular travelers.

Verdict: false

CBP processes ALL international arrivals — citizens and non-citizens alike. Reducing staffing at a major gateway airport would create backlogs and delays for every arriving passenger, regardless of immigration status.

Newark is a critical hub whose disruption would affect the broader national air system.

Verdict: true

Newark handles approximately 20,000 international arrivals daily and serves as United Airlines' key East Coast hub for 97 destinations. Aviation experts widely agree that disruptions there would reverberate across connecting flights nationwide.

Transportation Secretary Sean Duffy supports the airport restriction plan.

Verdict: false

Duffy has spoken out against the proposal — an unusual instance of public pushback from within the administration, signaling the plan is not yet settled policy.

How Dependent Is U.S. International Travel on Sanctuary-City Airports?

Background: What Is a Sanctuary Jurisdiction?

The term 'sanctuary city' has no single legal definition. It broadly refers to cities, counties, or states that have adopted policies limiting how much local law enforcement cooperates with federal immigration authorities — specifically, ICE detainer requests asking local jails to hold undocumented immigrants for federal pickup.

The DOJ under the current administration has identified 35 such jurisdictions and has been escalating pressure on them through funding threats, lawsuits, and now the airport access proposal. Cities like New York, Chicago, Los Angeles, and San Francisco have long maintained these policies, arguing they improve public safety by encouraging immigrant communities to work with local police without fear of deportation.

Federal courts have repeatedly blocked attempts to strip funding from sanctuary cities, citing the anti-commandeering doctrine — the constitutional principle that the federal government cannot force states or localities to administer federal programs. The airport restriction proposal represents a novel workaround: rather than withholding funds, it would leverage federal control over CBP airport staffing.

What Travelers Should Watch For

1. Monitor your departure airport's status — Check whether your home airport is in a city the DOJ has flagged as a sanctuary jurisdiction. Updates will likely come from your airline first.
2. Build in extra connection time — If this policy moves forward, international connections through at-risk hubs like Newark or JFK could face longer customs queues or reduced flight options.
3. Watch for airline route changes — Major carriers like United, Delta, and American would need to reroute some international flights if CBP staffing is cut at their hub airports. Sign up for route alerts.
4. Contact your representatives — This is still a proposal under consideration. Congressional members — especially those from affected districts — have sway over DHS policy. Your voice matters.

Stay Informed & Take Action

• Check CBP Airport Operations Status: U.S. Customs and Border Protection maintains updated information on port-of-entry operations across the country.
• Sign Up for Flight Alerts: Your airline's app or email alerts will be the fastest way to learn about route changes affecting your international travel plans.
• Contact Your Member of Congress: This proposal is not yet law. Congressional members on transportation and homeland security committees are weighing in — your voice counts.

Sources & References

• Primary source: life — Nathaniel Reed
• U.S. Department of Homeland Security — DHS Secretary Mullin's sanctuary city enforcement proposals and CBP airport staffing authority
• U.S. Department of Justice — DOJ identification of 35 sanctuary jurisdictions in federal immigration crackdown
• U.S. Customs and Border Protection (CBP) — Port-of-entry operations, international arrival processing, and staffing at gateway airports
• Scripps News / Source Reporting — Original reporting on Newark Liberty operations, 20,000 daily arrivals figure, United Airlines 97-destination hub data, and Transportation Secretary Duffy's public opposition