The root cause is an air traffic controller shortage, a nationwide issue the Trump administration has pledged to fix.

Travelers in and around the New Jersey area have officially been warned to do their best to avoid Newark Airport as it enters its second week of staffing shortages and other issues leading to major delays.

An air traffic controller warned Friday that Newark Liberty International Airport is unsafe for travelers as it has been wracked by staffing deficits over the past week, according to MSNBC correspondent Tom Costello.