Anyone who is a citizen of a country participating in the Visa Waiver Program (VWP) can submit an ESTA application.
The applicant must hold a valid electronic passport and is eligible only if planning to stay for up to 90 days for purposes of tourism, business, or transit.
The application can be submitted directly by the applicant, or if necessary, by a family member or a travel agency on their behalf.
* ESTA Visa Waiver Countries