Actually, I disagree. Americans that do take an interest are more apt to go beyond the tabloid stories and the media hype of "saint" Diana and from various reputable sources and forums such as this one, get a more clear and concise background into both Charles and Diana and realize that when it came to the marriage, both were at fault and both caused the downfall of the marriage overall.
Just an odd question here. Which Americans are you basing your opinion on? Was there a poll? An American based media article? Or are you pulling this opinion out of a hat? Just curious.
Im talking about the forum I used to be on, which problaby mostly had American "active members" (and some other non British).
Not all were pro Diana of course, (of the Americans I mean).
A few didn't like her, some liked her but didn't idolise her.. Some had liked her a lot, but had grown more even handed in how they viewed the marriage.. However, there weren't many british that I know of, on the Forum, at least not active posters.. and by and large, the forum's members who were very much Pro Diana and anti Charles, were dominant.. To the point where people like myself who liked her but didn't idolise her, often left..
And on other places on the internet, where discussions may crop up about the RF, I've noticed the same thng, that its largely Americans who are very much pro Diana.. (to an extreme degree).
And when I see TV programmes about the RF, I can see that a lot of these were rather slanted toward Di and against Charles, and of course Americans are likely to see these as their first impressions of the Charles and Di situation or the RF... And first impressions tend to stick.
So while I'm not saying that All americans are "extremely pro Diana" (most of them aren't at all interested in British affairs and no reason why they should be) I do believe that the most extreme Pro dianaists on the Internet seem to be American.
Of course, and when the Queen did make her State visits to USA, we were given free passes to attend if we could for different events from our clubs or state governments. Same invitations went out when Dutch and Spanish Royals were here. Lovely outings with best dress [depending if evening or afternoon walk-about] but we did for many people, not just Royals. Part of the show. Certainly didn't mean that we adored the guest. Part of jobs or demands of organizations. I remember studying facts on a guest the weeks before so I would know a few truths if required in conversation. Remember PR is a great thing in the media. It can make or break anyone when and if it wants to. That is just life.
Who were given free passes? I think that certainly a fair few Americans are interested n Royalty because it is something they don't have.. just as often Westerns are popular in the UK because - they don't have a Wild West... more so than they were in the US after a certain time.
Of course lots of people are not interested in the slightest, but again from what I've seen, from Friends who visited America at the time of the Will and Kate wedding, a lot of Americans were much more keen ot see it than people in the UK.