Electronic System for Travel Authorization
Electronic System for Travel Authorization is an online application system developed by the United States government to pre-screen travelers before they are allowed to board an airplane or ship bound for the United States. The visa waiver program is a U.S. government program that enables citizens and nationals from the 38 Visa Waiver Countries to enter the United States for tourism or business purposes for up to 90 days without obtaining a visa. For more info, visit this website.
