Blank Quilting fabrics are NOT made in USA. We have been a dealer for them for many years, but have recently stopped, not because of the quality but because the shipping costs from their east coast location are too high for us to continue selling them profitably. They are decent quality fabrics, on par with most other quilt-shop quality fabrics.
All Blank Quilting fabrics are printed either in So. Korea or China (most in So Korea), on greige goods woven and processed in China. Various sources are used for the raw cotton used, including China, Pakistan, Egypt and the USA among others.
After printing and finishing in Korea or China, the jumbo rolls are shipped to the east coast of the USA where they are doubled and rolled, usually onto 15 yard bolts and distributed to quilt shops.
About the only thing "made in the USA" about Blank (or any other quality quilting fabric, for that matter) might be the bolt cardboards they are rolled onto, and the original designs used.