I have not checked out that site, but you might need to be sure of their definition for American Made, to be certain that your items will qualify.
We have a store here locally (Buffalo NY area) that is all about made-in-America. But what determines whether an item is made here? Is it just the craftsmanship or final assembly that must take place in America? Or is it where all - or the majority - of the materials are made?
I would love to sell table linens to that local store! But I cannot find any American-made fabrics that I really like. Cranston/VIP stopped printing here a couple of years ago. Santee still prints in the US, but I don't care for their designs.