the US at the port of entry. The form has to be completed and
presented to the INS inspector who would ask you questions about
the purpose of your trip, your stay duration, and your place of
residence in the US. When you leave the country, you must provide
the I-94 to your airline.
INS Form I-94 can prove that you arrived in the US legally and
that you have not stayed beyond the authorized period of stay.
submitting INS Form I-94 to the proper authorities when you leave
the US can prove that you did not violate US laws by staying too
long and offers the proof that you are willing to obey U.S. immigration
It is very
important if you again want to travel to the US as an immigrant
or nonimmigrant in the future to obey US laws.
You will need
to replace your INS Form I-94 (Arrival Departure Record) if it
was lost, stolen, or mutilated. If you are applying for an extension
of stay or change of status.
here for a sample Arrival Departure Document