Form I-94 Arrival/Departure Record
The form I-94 is the Arrival/Departure Record, issued by a CBP officer to foreign visitors entering the United States. The admitting CBP officer attaches the I-94 to the visitor’s passport and stamps the departure date and the visitor must exit the U.S. on or before that date.
The I-94 must be turned in to a CBP officer or airline representative when the visitor exits the U.S. If it is not turned in to a CBP officer or airline representative, the visitor will be considered an "overstay" and they may be denied entry when they attempt to reenter the United States in the future.
If you returned home with your Form I-94 (white) or Form I-94W (green) Departure Record in your passport, it is possible that your departure was not recorded properly. Read More.