Thank you, Gunpowder.
To answer a few questions.
You can indeed get clotted cream here, but from specialty shops. It is not widely available because most people don't know about it or what to do with it--cream teas just aren't a common American custom.
Blackcurrant jam is more available than blackcurrant juice (it is my personal favorite!!!!). All juice is generally out of style in favor of water for children, so introducing a new kind of juice at this time is not likely to be a success.
Sheep lungs were banned by the US in the 1970s from what I can tell for two reasons. One is that is difficult to remove phlegm and stomach acids and even less appealing fluids that migrate into the lungs during the slaughtering process. Later, many beef and sheep products were banned for causing mad cow disease (sheep have a similar disease called scrapie).
Hershey's chocolate has an unfamiliar taste to many British people, but it's not spoiled, nor are the ingredients bad. In fact, the ingredients are better than those found in a Cadbury's milk chocolate bar. Look it up for yourself. The unfamiliar taste is that of slightly fermented milk, which gives it a parmesan cheese-like tang. You can like it or not like it, but it's perfectly healthy (as far as a chocolate bar goes).
I am sorry Nancydrawn had a hard time with bureaucracy, but I am feeling pretty sure that there was something she didn't understand about how the system works, not that the entire U.S. government does not have a system to deal with various categories of non-resident aliens properly. I don't think it was out to get her. Of course it makes sense for people who have green cards to have social security numbers, because they are taxpayers. Green card holders have the right of permanent residence in the US, and a Green Card is a step on the path to citizenship. I am glad the people of New Jersey treated her well!