Trouble is that Jackie lives in Israel and not in the UK and I think UK based insurers will only cover UK residents.

The Visa one sounds good Jackie and our annual travel insurance is currently with AmEx. Ours provides cover for certain water sports, etc in with the premium. If you can find anything comparable for a cheaper price, then that's even better although make sure it's with a reputable company.

I know insurance sounds expensive but, in the unhappy event that someone is taken ill whilst in the USA, you'll be so glad you have it as medical costs are sky high. Even one trip to the doctor is $100 - $200 and that's without any medication prescription. My mother has had an eye problem while we've been in Florida and one tiny little bottle of eye drops cost $129.