Re: Can Canada sue?
Travelling to Kiwiland from London. Stop off in LA. We were removed from the BA plane and shoved in a holding pen for a few hours (whilst the plane was refused I suppose). Never saw immigration etc. Same on the way home. This was pre-9/11 so I don't know if they do things differently now.
It will mean airlines start buying more long distance flyers to by-pass landing in USA.