*** Australians travelling to the United States - IMPORTANT INFORMATION ***
Beginning January 12, 2009, all nationals and citizens of Visa Waivered Program (VPA) countries will be required by law to obtain a travel authorization prior to initiating travel to the United States under the VWP.
This authorisation can be completed via a free Internet application administered by the Department of Homeland Security (DHS) through a US government website. Apply for your authorisation at https://esta.cbp.dhs.gov