The U.S. Department of Homeland Security (DHS) is reminding travelers from all Visa Waiver Program (VWP) countries that they are now required to obtain approval through the Electronic System for Travel Authorization (ESTA) prior to traveling to the United States. This requirement applies to all eligible citizens or nationals traveling under the VWP.ESTA is a web-based system, initially launched in August 2008, that determines the preliminary eligibility of visitors to travel under the VWP prior to boarding a carrier to the United States. To date, more than 1.2 million ESTA applications have been received, and more than 99.6 percent of applicants have been approved, most within seconds. DHS announced to take a reasonable approach to travelers who have not obtained an approved travel authorization via ESTA, and to continue an aggressive advertising and outreach campaign throughout 2009. Travelers without an approved ESTA are advised, however, that they may be denied boarding, experience delayed processing, or be denied admission at a U.S. port of entry. Visitors may apply for travel authorization via the ESTA Web site at https://esta.cbp.dhs.gov.Source: DHS press release 01-12-2009; find full text here>>.