Welcome to the United States. We are glad that you decided to visit, study, work, conduct business or come permanently to the United States. U.S. Customs and Border Protection (CBP) is a diverse organization responsible for a wide-ranging set of missions that protect the United States against terrorists, other criminals and illegal activity while facilitating legitimate trade and travel. The information in this brochure will help you prepare for your trip and ensure that your experience entering the United States is as smooth as possible. Your cooperation with us will help speed you along your way.