I only said non-Americans because at least their charges aren't converted further. Having said that, I always prefer to be charged in the "home" currency and let the CC company convert, rate is usually better than what they would use We don't pay foreign transaction fees on our card, so that might make it more favourable to be charged in USD??

Melody - Ivan's (and many others) have their menu priced in USD, so in theory, when they charge your CC in USD (which they do), they haven't converted anything.