Quick summary
U.S. Customs and Border Protection processing at Newark Liberty International Airport (EWR) faces an imminent shutdown threat after DHS Secretary Markwayne Mullin stated on May 28, 2026 that CBP officers could be reassigned away from Newark because Northern New Jersey authorities are not cooperating with federal immigration enforcement. Without CBP staff on site, airlines cannot legally disembark international passengers — meaning arriving flights would be canceled or diverted, not simply delayed. Newark handled 24.5 million international passengers last year and serves as United Airlines‘ primary transatlantic gateway.
No formal order has been issued, but Mullin’s language — “we’re going to have to make this step pretty quick” — signals this is no longer a hypothetical. Unverified contingency planning circulating in the industry suggests United may have been told to prepare for disruption affecting the majority of its daily international arrivals.
The Trump administration has put one of America’s busiest international gateways in the crosshairs of an immigration enforcement dispute — and the collateral damage would fall squarely on travelers.
DHS Secretary Markwayne Mullin publicly warned in recent days that Customs and Border Protection officers could be pulled from Newark Liberty International Airport and redeployed to a nearby immigration detention facility, where protests have escalated. The trigger: Northern New Jersey law enforcement’s refusal to assist federal ICE agents. The consequence, if Mullin follows through, would be immediate and severe — no CBP officers means no legal authority to admit arriving international passengers, which means no international arrivals at all.
This is not a staffing inconvenience. It is a mechanism that would force airlines to cancel or divert every inbound international flight scheduled into Newark.
For United Airlines, which has built Newark into its largest transatlantic hub with daily services to London, Frankfurt, Paris, Tel Aviv, and beyond, the operational fallout would be staggering. Crew rotations, aircraft positioning, onward domestic connections — all of it unravels the moment CBP processing stops. Passengers booked on transatlantic routes into Newark, particularly those connecting to smaller U.S. cities that have no direct international service, would have nowhere to go without significant rebooking.
The threat is real, the timeline is unclear, and travelers with Newark bookings need to act now.
What a CBP withdrawal at Newark actually means for flights
The legal mechanics here are straightforward and unforgiving. U.S. Customs and Border Protection operates under Title 8 and Title 19 of the U.S. Code as the sole authority to admit international passengers at ports of entry. The FAA governs airspace and flight safety — it has no role in customs processing. An aircraft can physically land at Newark without CBP present, but passengers cannot legally be admitted to the United States. Airlines know this. The moment DHS confirms a CBP withdrawal, carriers will cancel or divert affected flights rather than strand passengers on a grounded aircraft.
Mullin confirmed the mechanism himself: “We are not going to halt the flights, we won’t be able to process them because we won’t have officers there.” That distinction — DHS not “halting” flights while making it operationally impossible to operate them — is the kind of bureaucratic framing that obscures a simple reality for travelers: your flight does not arrive.
Official confirmation of Mullin’s warning is available via reporting on his May 28 statements, which describe Newark as a major United hub and make clear that ceasing processing would effectively halt international travel and commerce at the airport.
Unverified but detailed contingency planning circulating in the industry suggests United may have been advised to prepare for disruption affecting an estimated 72% of its daily international arrivals, reducible to around 47% through rerouting where passengers already had onward connections. Alternative diversion airports named in that unconfirmed planning include Washington Dulles (IAD), Houston (IAH), and Las Vegas (LAS). ATC has not independently verified these figures, and United has not publicly confirmed any contingency plan — but the detail and internal consistency of the claims warrant serious attention.
This threat is not isolated to Newark. ATC’s broader coverage of DHS’s CBP suspension threats shows that JFK, Washington Dulles, and Portland International are also reportedly under consideration — gateways that together process tens of millions of international arrivals annually.
| Factor | Current status | If CBP withdrawn |
|---|---|---|
| International passenger processing | Fully operational | Suspended — no legal admissions |
| United transatlantic arrivals | Daily service to London, Frankfurt, Paris, Tel Aviv and others | Canceled or diverted to IAD, IAH, or JFK |
| Annual international passengers | 24.5 million (prior year) | Zero at EWR while shutdown active |
| Cargo processing | Operational | Halted — CBP required for international cargo clearance |
| Primary diversion alternatives | JFK (full international hub), IAD (United hub), ORD (United hub) | Capacity pressure expected at all three |
| Formal DHS order issued | No — threat only, as of late May 2026 | Imminent if local cooperation does not change |
Flight deals
most people never see
Our AI monitors 150+ airlines for pricing anomalies that traditional search engines miss. Air Traveler Club members save $650 per trip per person on average: see how it works.
Each deal saves 40–80% vs. regular fares:
The political mechanics behind an aviation crisis
The Trump administration’s pressure campaign against so-called sanctuary jurisdictions has been escalating since early 2026, but targeting airport customs infrastructure is a different order of magnitude from previous enforcement disputes. Mullin first raised the airport threat privately with travel industry executives in April 2026, then went public on May 28 — a sequencing that suggests deliberate escalation rather than an off-the-cuff warning.
The specific flashpoint is the Delaney Hall detention facility near Newark, where protests over conditions have grown confrontational. DHS argues that CBP officers are needed to protect ICE staff at the facility. Critics — including, reportedly, Transportation Secretary Sean Duffy — have pushed back on the idea of disrupting aviation infrastructure over a local law enforcement dispute. Immigration enforcement is a federal function; local police cannot be compelled to suppress non-violent protests under the First Amendment.
What makes the aviation impact so severe is the hub-and-spoke architecture of United’s Newark operation. A traveler flying Frankfurt to Cleveland, or Tel Aviv to West Palm Beach, clears customs at Newark and connects domestically. Remove the customs function and you do not just cancel the transatlantic leg — you strand the entire itinerary. The disruption radiates outward to dozens of smaller U.S. cities with no direct international service of their own. For context on how geopolitical decisions create exactly this kind of cascading flight disruption, the impact of Russia airspace closures on routing and fares offers a useful parallel.
Steps to protect your Newark booking right now
No formal CBP withdrawal order has been issued as of late May 2026 — but Mullin’s public language leaves little room for optimism, and the window to act before schedules are disrupted is narrow.
- Check United’s travel notices daily. Go to united.com → Travel notices. This is where United will post any Newark-specific rerouting or cancellation alerts tied to CBP staffing changes. Set a daily reminder — do not wait for an email.
- Price and hold backup itineraries now. If you are arriving internationally into Newark within the next two weeks, identify equivalent routings into JFK, IAD, or ORD on your airline’s website today. You want that research done before a shutdown is confirmed, not after — when every other affected traveler is calling at the same time.
- Understand your refund rights. If your flight is canceled, U.S. DOT rules require the airline to offer a full refund if you choose not to travel. EU261/2004 and UK261 cover rerouting or refunds for EU/UK-departing passengers even when disruption stems from extraordinary circumstances — though cash compensation is unlikely to apply here. Canadian APPR passengers have similar rerouting protections. Know which regime applies to your ticket before you call.
- Book flexible fares for any new Newark itinerary. Until this threat is formally withdrawn, avoid non-refundable tickets routing through EWR. The marginal cost of a changeable fare is trivial against the cost of a last-minute rebook or a missed connection.
- Consider routing through JFK for New York-area arrivals. JFK offers comparable transatlantic connectivity and is not currently named in DHS’s sanctuary jurisdiction targeting. It is the lower-risk entry point for the New York metro area right now.
Watch: An official DHS or CBP announcement confirming any reassignment of officers from Newark — expected in the coming days following Mullin’s recent comments. If it drops, international cancellations at EWR follow within hours. Also watch for United Airlines operational advisories on its newsroom and travel notices pages — if United issues a formal rerouting notice, that is the signal that carriers are treating the threat as imminent.
Questions? Answers.
Can my flight still land at Newark if CBP officers are withdrawn?
The aircraft can physically land, but passengers cannot legally be admitted to the United States without CBP officers present to process arrivals. In practice, airlines will cancel or divert international flights before departure rather than land passengers who cannot be cleared — so your flight will not arrive at Newark if CBP processing is suspended.
Am I entitled to compensation if my Newark flight is canceled due to a CBP shutdown?
Compensation depends on your ticket’s departure region. U.S. DOT rules require airlines to offer a full refund if your flight is canceled and you choose not to travel, but there is no federal cash compensation requirement for government-caused disruptions. EU261/2004 and UK261 require rerouting or refunds for EU/UK-departing passengers, but cash compensation is unlikely to apply as this would likely qualify as extraordinary circumstances outside the airline’s control. Canadian APPR passengers have similar rerouting protections. In all cases, you are entitled to a refund if you choose not to travel on a rerouted itinerary.
Which U.S. airports are safe alternatives to Newark right now?
JFK is the strongest alternative for New York-area international arrivals — it has broad transatlantic connectivity and is not currently named in DHS’s sanctuary jurisdiction targeting. Washington Dulles (IAD) and Chicago O’Hare (ORD) are both major United hubs with full CBP operations. Boston Logan (BOS) and Philadelphia (PHL) are additional options for the Northeast corridor. Note that if DHS expands its threat beyond Newark to other sanctuary-jurisdiction airports, this picture could change — monitor DHS announcements closely.
Does this affect flights departing Newark, or only arrivals?
The immediate threat is to international arrivals — CBP processes inbound passengers, not departures. However, if international arrivals are canceled or diverted, the knock-on effect on aircraft positioning and crew rotations will disrupt departures as well. Outbound international flights from Newark could face delays or cancellations as a secondary consequence of the hub’s operational breakdown.
