or ESTA. A parole policy also allows nationals of China visa-free access to the Northern Mariana Islands for up to 14 days. Travelers with a visa or ESTA are admitted to the territories in accordance with the terms of the visa or ESTA. Travelers using the Guam–CNMI Visa Waiver Program or the parole are required to complete an I-736 form (online as of February 2018), hold a machine-readable passport and nonrefundable return ticket, and are not permitted to travel to other parts of the United States. Because of special visa categories for the Northern Mariana Islands' foreign workers, traveling between Guam and the Northern Mariana Islands still requires a full immigration inspection, and all visitors departing Guam or Northern Mariana Islands are inspected regardless of final destination. American Samoa U.S. visa policy does not apply to the territory of American Samoa, as it has its own entry requirements and maintains control of its own borders. Hence, neither a U.S. visa nor an ESTA can be used to enter American Samoa. If required, an entry permit or electronic authorization (OK Board) must be obtained from the Department of Legal Affairs of American Samoa. U.S. nationals may remain indefinitely in American Samoa. To enter, they must present a U.S. passport, or apply online for an electronic authorization providing a copy of their birth certificate, identification card and itinerary. If they cannot present their original or certified birth certificate and valid identification, the application requires a fee of US$50 for verification of vital records. Nationals of countries in the Entry Permit Waiver Program (EPWP) may visit for up to 30 days without an entry permit. However, if arriving by air, they must apply online for an electronic authorization called "OK to Board" or "OK Board", at least 48 hours before travel, providing a biometric passport and itinerary. They must also pay a fee of US$20, before travel or on arrival. Entry Permit Waiver Program (EPWP) of American Samoa Nationals of other countries need an entry permit. To apply, they must have a local sponsor, who must appear in person at the Immigration Office of the Department of Legal Affairs and provide either a deed of private land or signatures of the sponsor's sa'o (head chief) and pulenu'u (village mayor). Travelers must also provide a copy of their passport and itinerary, clearances from the District Court of American Samoa and Lyndon B. Johnson Tropical