Visa Waiver Program
Allows citizens of certain selected countries, traveling temporarily to the United States under the nonimmigrant admission classes of visitors for pleasure and visitors for business, to enter the United States without obtaining nonimmigrant visas. Admission is for no more than 90 days. The program was instituted by the Immigration Reform and Control Act of 1986 (entries began 7/1/88). Under the Guam Visa Waiver Program, certain visitors from designated countries may visit Guam only for up to 15 days without first having to obtain nonimmigrant visitor visas.
Source: U.S. Citizenship and Immigration Services
Citizens of participating countries meeting the Visa Waiver Program requirements to may be allowed to enter the United States as visitors for pleasure or business without first getting a visa. Visitors can stay only 90 days and can not extend their stay.
Source: U.S. Department of State.