However , a Visa Waiver Program traveler must obtain a new ESTA authorization if he or she is issued a new passport , or changes his or her name , gender or country of citizenship .
Each travel authorization under ESTA can be valid for up to two years .
A Visa Waiver Program traveler must obtain a new ESTA authorization if he or she is issued a new passport , or changes his or her name , gender or country of citizenship .
Each travel authorization under ESTA can be valid for up to two years .