The E-3 visa classification applies only to nationals of Australia, their spouses and children under the age of 21. E-3 principal applicants must be going to the United States solely to work in a specialty occupation. The spouse and children need not be Australian citizens.
The E-3 visa is a United States visa for which only citizens of Australia are eligible. It was created by an Act of the United States Congress as a result of the Australia–United States Free Trade Agreement (AUSFTA), although it is not formally a part of the AUSFTA. The legislation creating the E-3 visa was signed into law by U.S. President George W. Bush on May 11, 2005. It is widely believed to have grown out of the negotiation of a trade deal between the US and Australia.