The requirement, set out by US Customs and Border Protection (CBP) this week, would become part of the Esta visa waiver application process, with other proposals including gathering phone numbers used by Esta applicants over the past five years and email addresses used over the past 10, as well as more information about their family members.
This comes after the cost of an Esta increased from $21 to $40 on September 30, and in advance in a hike in national parks fees to $100 per person from 1 January, for the most popular parks.
