Okay, wool is exempt, period. So you don't need to worry about it for children's items, as far as the CPSIA is concerned. Also, realize that the FTC can't take something that you make, run it all around the world and try to determine what country it was manufactured in to prove you wrong. There are so many hours in the day, and there are only so many inspectors. If you are concerned about the fiber content of wool, learn to do burn tests. Take something that you know for certain is wool, and burn it. It smells like burning hair. You can definately recognize the smell. Take another piece that you are not sure of burn it. Does it smell the same? Okay so maybe it has a small percentage of cashmere, alpaca or vicuna. If it has any synthetic it will show melting and burning, and you will definately notice a plastic smell. The FTC also has allowances for unknown origin. Or you can say recycled wool of unknown origin. Or recylced from unknown remmants. And if the garment has a label, believe it. No one is going to go to the trouble to put a bogus label on something, well maybe if it was from China. The FTC has rules for using someone elses labeling, and using recycled product. It's closer to the bottom of the labeling verbage. I think you may be making this much harder than it is. There are really not government agents around every corner that will be confiscating your products, and grilling you for proof of country of origin. Just do your best. Goodness, when half the current administration didn't even pay their income tax, and they blow it off, how can they demand that you know exactly which loom in which country and which sheep gave you the wool in a recycled sweater. It's just not possible.