If you haven’t made any large shipment in U.S, you are allowed to underestimate the procedure. It is too long and seeks lots of paperwork. Customs Bond/301 Customs Bond (CBP Form 301) plays a vital role in reducing this documentation. U.S Customs and Border Protection (CBP) have set a regulation that customs bond is required to import things in United States. It is a form of insurance which ensures protection and makes shipping process easy for importers. Continuous Customs Bond can be issued through registered insurance broker/surety company. It is like an agreement between three parties – government, broker and importer.