Traveling to the US?
When planning a trip to the US, be it for a holiday or business purposes, every traveler who is not a US-citizen should make timely arrangements to receive authorization to enter the country. If you are a citizen of one of the 36 countries participating in the Visa Waiver Program, you will not need a visum. Citizens from all other countries will have to apply for a visum.
Visa Waiver Program
Procedure for travelers from a Visa Waiver country.
If you are a passport holder from a Visa Waiver country, please visit the US Electronic System for Travel Authorization and arrange your travel authorization via this website at least 72 hours prior to departure.
Procedure for travelers from non-Visa Waiver countries.
Passport holders from countries that do not participate in the Visa Waiver program, can visit the website of the US Department of State to find out which form(s) to use and start the application procedure for obtaining a visum.