I think it was "Smarter Every Day," but there's a YouTube channel where the guy went all-out in trying to design, source, and manufacture a simple grill scrubber 100% in the US, and failed. He got the product finished and on the market, but it was literally impossible to do it with 100% American content. IIRC, part of the problem was suppliers that lied about their sourcing, but that still represents the complete lack of availability of US sources.