入关的时候免费给你做吧. JFK早就要求了.

现在出关也要做了

The Department of Homeland Security has recently published that it has begun the US VISIT Exit Program at Philadelphia International Airport. Please find attached the US VISIT Update Sheet which gives instructions on what to expect when you are departing from Philadelphia International Airport for an overseas destination.

Please note: Other US airports that are also part of this US VISIT Exit Program are:

Chicago O'Hare International Airport
Baltimore/Washington International Airport
Hartsfield-Jackson Atlanta International Airport
Dallas/Fort Worth International Airport
Denver International Airport
Detroit Metropolitan Wayne County Airport
Fort Lauderdale-Hollywood International Airport
Newark Liberty International Airport
Phoenix Sky Harbor International Airport
San Francisco International Airport
Luis Munoz Marin International Airport
Seattle-Tacoma International Airport