Originally Posted by
BarneyMcGrew
However, further down in the link you gave above it does state:
So would seem to be for US and Canadian Passport holders (and US Permanent Residents) as opposed to international travellers/visitors on other passports, regardless of returning Visa Waiver/ESTA status.
This language simply hasn’t been updated since the programme was expanded and the app brought in house. I have successfully traveled multiple times with ESTA Visa Waiver travelers who have used MPC without issue.
(Funnily enough, I just opened my own MPC app to prove this - as I usually use GE and don’t check this app often - and look what popped up!)