Automated Manifest System (AMS) was launched by the U.S Customs and the Border Protection Agency in 2004. It was launched to gain detailed information about cargo imported into the country.
The AMS requires all vessels entering or passing through the US waters to furnish information about the cargo they are carrying. The required information is expected to be uploaded 24 hours before the ship sails from the port of loading. The AMS system is also followed by Mexico.