Changes for travellers to the United States from Visa-Waiver Program countries.
From 12 January 2009 onwards, this application for travel authorisation will become mandatory for all travellers under the Visa-Waiver Program. Travellers must apply through the online form, which will then replace the I-94W form, currently distributed onboard prior to arrival in the United States. The use of the I-94W will be discontinued from 12 January 2009 onwards.
Travellers should submit the application online at least 72 hours prior to departure. U.S. authorities will try to accommodate last-minute and emergency requests, but the required approval cannot be guaranteed within less then the 72 hour time frame.