VGI Documents: Terms + Conditions Shipper's Letter of Instruction (SLI) Power of Attorney VGI Credit Application US Government Documents: ISF Regular Cargo Form ISF Notice ISF Operational Requirements US Goods Returned Importer Certification Statement Form CBP 3299 Form FCC 740 Helpful Articles The Secret World of Customs Brokerages Understanding Customs Bonds Importer Security Filing Why Brokers Require a Power of Attorney