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The first thing you should do at the airport is to go through immigration. Make sure you have I-94 form you filled out on the plane, your customs declaration, passport and airline ticket. You will be asked when you plan to return home and some other questions. After you pass through immigration don’t forget to put your I-94 form and customs declaration in the passport and keep them at all times.
At the airport you should not go through the immigration.
The traveller may be asked only one question.
You may be asked only about the plans of your return.
The traveller must fill out I-94 form at the airport.