Originally Posted by
televisor
I welcome introducing this for US and Canadian citizens (maybe Australians too?).
Everyone else should be exempt though. They trust us so we can trust them.
FWIW the UK already has a Visa Waiver system - it is however per-entry.
https://www.gov.uk/get-electronic-visa-waiver
(On the brexit topic: I feel that's going to be providing a steady stream of laughs for they next few years...)
The UK's electronic visa waiver II program applies to only a handful of countries and requires uploading an image of the passport's biodata page. But I'm not sure it's a visa waiver of any sort if the eligible country's citizens change flight plans so as to travel to (or is it arrive in?) the U.K. within less than 48 hours. I can't see the UK/EU being so strict with US passport users.