What cuts of quality of life would that be? Tropical fruits, coffee, seafood, and some out-of-season vegetables, sugar? Most if not all of those luxury purchases was produced in the states of America, where? Hawaii. Hawaii's industry was sugar and sugar byproducts as well as fruit and coffee. Unfortunately, they are too far to be economically viable (at least that is what they say), and instead turned to the closer Bermuda to import these commodities and South America for others. The US produces an excess and could easily become self sufficient if it was politically correct to do so. America is huge and has a varied amount of climates that other countries do not have, we could easily grow everything we want here. Unfortunately, we have green peace initiatives and bureaucracy that restricts this from happening.
Pretty concise article from the
World Atlas.