Having lived in the US, Europe and Japan and currently living China, I'd say that yes it's very difficult in the US, but in China it's rather difficult too... For example, I find it very hard to find good quality fish to cook (most of the fish you get here have a strange test I find)...
It's easy to find organic produce here but it's not that cheap (at least compared to Europe), and I'm not exactly sure if I trust it as much as I trust organic produce in Europe or Japan...
That said from my 6 month experience living in Rochester, US is much worse... (and don't talk to me about university "food" there)