I believe all puppy mills should be shut down and breeders be registered with the state and strict regulations applied, with frequent, unannounced inspections.  There needs to be controlled sale of pets, again with frequent, unannounced inspections and on-site veterinary care in the case of pet shops.  Female breeders should have a limited number of litters and have veterinary care and supervised living conditions (for all the pets).  And people should continue to be encouraged to adopt shelter pets.