I can arrange cover for you if you like. But my advice for an easy option would be to open a bank account plus with HSBC. You then get free travel insurance which covers you for upto 30 days in the States as well. Or check you current bank to see if they have a credit card with free travel insruance attached. If you want me to look into it personally for you then PM me. But the credit card option is a good one. I had to make claims on the HSBC one when my wife fell ill in south africa, all medial, accomidation costs were meet easily, they called every day offering assistance and when it was time to fly back they paid for us to fly business class back to the uk.
Tim