From my perspective, there are three fabric designers in the US that bring a fresh and modern aspect of the fabric industry: Amy Butler, Heather Bailey and Joel Dewberry.
I am very fond of Amy Butler's work. Her fabrics are modern, colorful, young, and great to coordinate. Any creation with those fabrics look stylish and simple at the same time. And the fabric is soft, resistant and of high quality. I also love the creations that she designs. My enthousiasm conquiered my best friend's interest and we are together day dreaming about Amy's fabrics.
You can get a glance at Amy's fabric here. Heather Bailey does an interesting job with color. The style is more girly than Amy and looks almost vintage sometime. When the fabrics are mixed together or with an Amy Butler's fabric, the effect on the creation can be wonderful!
You can get a glance at Heather's fabric here. Joel Dewberry is a new fabric designer with a lot of talent. His fabrics are more modern and masculine with many small or clean patterns. Although each looks good individualy, the color palette of the collections makes them even more beautiful when coordinated.
You can get a glance at Joel's fabric here. I am not listing Kasse Fasset here as although he was born in the US, and got a degree in Boston, his headquarters are in London.