Cars are a bit off the subject, but some Fords are made in Mexico and our Honda was made in the US (Kentucky, I believe). And there's a Subaru plant about an hour away. It's hard to tell what is made in the US anymore with some things.
And to keep it on topic, I would probably be willing to pay more for US made fabrics, but I wonder if I could afford it. I would have to buy less fabric since I generally have a set amt to spend. But maybe then my room would be neater.