The US government is to start charging travellers $14 to apply for permission to enter the country.
The compulsory Electronic System for Travel Authorisation (ESTA) is free at present, but from 9 September visitors to the US will have to pay for it.
It lasts for two years; people who already have a valid form will not have to pay until their current one expires.
The Electronic System for Travel Authorisation form, which takes up to 72 hours to be approved, gives air passengers prior approval for entry to the US.
source: BBC News