  Before traveling to the United States, each Visa Waiver Program traveller must ensure that they have an approved travel authorization with their passport that is required prior to travel. If a traveller receives a new passport, they must re-apply for an ESTA travel authorization, with the new passport they plan to use before returning to the United States. A processing fee will be charged for all new requests. In case you have dual nationality and are sure you have a valid ESTA, you are required to use your eligible VWP passport to board the plane in your country of departure and upon arrival in the United States. If both of your countries of nationality have VWP nationality, it is best to choose the one you intend to use to travel to the United States for use whenever you travel. 