If you're an American consumer, you likely know the "mattress tag", labels attached to mattresses, pillows, stuffed animals, and pet beds, which often begin "This tag may not be removed under penalty of law except by the consumer". The tags indicate manufactures used no recycled material to produce the item. The regulation itself is Title 15, Section 70c of the US code, which can be cloned from github:
After shipment of a textile fiber product in commerce it shall be unlawful, except as provided in this subchapter, to remove or mutilate, or cause or participate in the removal or mutilation of, prior to the time any textile fiber product is sold and delivered to the ultimate consumer, any stamp, tag, label, or other identification required by this subchapter to be affixed to such textile fiber product, and any person violating this section shall be guilty of an unfair method of competition, and an unfair or deceptive act or practice, under the Federal Trade Commission Act [15 U.S.C. 41 et seq.].
This is quite a regulation when you consider it. US mattress manufacturers made $6.4 billion in revenue in 2008 by selling more than 35 million units. Each of those mattresses came with a tag, although all the examples I can find in my own home have three or four tags, often in multiple languages. These figures don't include pet beds, stuffed animals, pillows, or any of other qualifying textile fiber products.
Wikipedia mentions public outcry but doesn't cite sources. It also claims the law passed in the early 1900s, much like regulations about the purity of food. Unfortunately (or perhaps fortunately?), mattress production isn't a jungle, and I can find no evidence Teddy Roosevelt threw his lice-ridden, recycled mattress onto the Whitehouse lawn the way he allegedly did his breakfast sausage.
Just how angry were American consumers about recycled bedding?