On 18 May 2004, the Minister for Trade signed the Australia-United States Free Trade Agreement (AUSFTA) with the United States (US). Under AUSFTA, goods that are US originating goods according to the AUSFTA Rules of Origin may enter Australia at preferential rates of duty. AUSFTA also allows for Australian goods to receive reciprocal duty entry into the US.
Further information on AUSFTA is available via the following links.
Australian Customs Notices
Practice Statement and Associated Documents
Claiming preference under the Integrated Cargo System (ICS)