Our regional Carolina Farm Stewardship Association (North and South Carolina, USA) has issued an eating local challenge for the coming week (July 7-13) -- for folks to try to eat locally as much as possible (more challenging here in the Southeast than in some parts of the U.S.)

For lunch, my gardening companion had leftover organic rice (probably grown in the Central Valley of California), with leftover corn (grown somewhere in the Southeast), with pesto made from roasted cherry peppers (origin unknown), homegrown garlic, balsamic vinegar from Italy, pecans from the local coop (presumably from the Southeastern U.S.), cilantro from somewhere in the U.S., and grated parmesan (maybe from Wisconsin?), and a bit of the fresh mozzarella. Hmmm. It's illuminating to be mindful of where our food comes from! I remember seeing some years ago in a Central Market in Austin, Texas garlic labeled as from Argentina, and finding it a revelation. We import garlic from Argentina? Who knew? Of course, now we're much more aware of how much food is imported from all sorts of places (I saw Chinese garlic in a local produce market).
I can't help but think that we've had world trade in food and spices for centuries, if not millenia for good reason. But eating more locally is always a good thing, and there's no reason to have out-0f season fruit flown in from South America considered as a 'staple'. Or to mindlessly buy whatever is available, just because it's there.