Interested in a puppy (or if you just got one) and wondering whether it comes/came from a puppy mill in the US (the answer if you bought it froma pet shop is definitely yes )? The ASPCA has launched a search engine that enables people to search by breed, breeder and USDA license number. This is linked to inspection images from those breeders' premises.

http://nopetstorepuppies.com/buy-a-puppy