Info on the visa waiver program which avoid needing a visa, and the conditions where it doesn’t apply.
https://www.gov.uk/foreign-travel-advice/usa/entry-requirements
Offers reasons why he might need a visa, and that, in turn, points to some possible reasons he could have been denied boarding.
Or it’s just that Trump hates the Welsh.
Thanks for the link. Very interesting. I wonder if we’ll ever know the real reason he was denied. You know the press isn’t going to report it.
Blackadder: Have you ever been to Wales, Baldrick?
Baldrick: No, but I've often thought I'd like to.
Blackadder: Well, don't, it's a ghastly place. Huge gangs of tough sinewy men roam the valleys terrorizing people with their close-harmony singing. You need half a pint of phlegm in your throat just to pronounce the place-names. Never ask for directions in Wales, Baldrick, you'll be washing spit out of your hair for a fortnight.