It has been "subject to change" without "subject to change" all the time with Israel holding a fame of the currency of choice for the US, subject to an exchange rate of the day.
Were your grandparents part of the Bund? Just kidding!
Israel and the US are closer, as any honest history shows, than the US and Britain. Israel has always been our ally. Britain? Well, we've had a few wars with them.
Israel is a closer pal than Canada. We've had a few wars with Canada.
Would a US Navy employee be given a hard twenty years with more to come for passing the same kind of secrets to Canada? Or to Britain? Don't kid yourselves -- it wouldn't happen. Pollard's in the gaol for ten years too long because he is Jewish.