I found just having access to high-quality ingredients at a reasonable price to be difficult in the US. More difficult than in Europe at least & waaay more difficult than in Asia (ok, one datapoint: China).
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)
NYC is technically not "America" though, so i'm not sure if I've raised a point of contention or simply bragged about how my city is teh awesum.