Passing through Customs Once you have cleared immigration inspection, you will next proceed through customs. Certain items are restricted and may not be brought into the United Sates. Restricted items include controlled drugs, firearms, animals, produce, and certain animal products (ivory, turtle shell). See http://www.cbp.gov/xp/cgov/travel/ id_visa/kbyg/prohibited_restricted.xml for detailed information about restricted items.
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