Passport / Visa
Citizens of the Schengen countries, the United Kingdom, Ireland, Canada, Australia, New Zealand, Singapore, Japan, South Korea, Taiwan and the Kingdom of Brunei can visit the United States for up to 90 days without applying for a visa (as well as citizens of Andorra, Lichtenstein, Monaco and San Marino). Citizens of these countries must obtain an ESTA (Electronic System for Travel Authorization) before traveling. All other travelers must obtain a visa before visiting the United States. International travelers need a passport that is valid for at least 3 months after the end of their intended trip in order to enter the country.