Honestly, I’d still be surprised to learn feathers in America are produced from American poultry. Far more likely the local ones get burned and everything for sale is shipped across the ocean because cheaper.

Feathers? Not a chance. Far too much volume per unit weight. And if they're compressed, you end up with only broken feathers.

Or they don't get burned but they do get shipped across the ocean to be processed, and then shipped back… that's the commercial way