Almost a million individuals enter the U.S. daily. Everyone arriving at a port of entry to the U.S. is subject to inspection by Customs and Border Protection officers for compliance with immigration, customs and agriculture regulations. The more international travelers know about what to expect, the easier and quicker the process becomes.

• International Travel Tips
• Prohibited and Restricted Items
• Customs Duty Information
• What You Must Declare
• Types of Exemptions
• For Frequent Travelers
• Sending Items Back to the U.S.
• Gifts
• Money and Other Monetary Instruments

Source: http://www.cbp.gov/travel/international-visitors/know-before-you-go