Effective January 12, travelers from countries participating in a US Department of Homeland Security Visa Waiver Program must register on-line through the department’s Electronic System for Travel Authorization before you embark on a trip to the US.
On-line applications may be submitted at any time before you travel, and once approved, will be in effect for up to two years or until your passport expires, whichever comes first.Authorizations will also be valid for multiple entries into the U.S. DHS recommends that applications be submitted as soon as you begin planning travel to the US, and not less than 72 hours prior to travel.