Yeah, I'm not sure that you'd get away with that though, craft1948, because you have to register your Kindle to an Amazon account to purchase books.
I don't know, but would guess that would also mean you'd have to register it using a US credit card and address.
In purely technical terms a WiFi Kindle purchased in any country would work in any other country. A would also work in any country, although the 3G part would be dependant on Amazon having a deal with a 3G supplier in that country.