I'm afraid, Sandy, that this comes down to something I have posted elsewhere - there are responsible breeders and there are puppy-mills.
It should be obvious to anyone buying a puppy that it is not like buying a pound of butter or even a motor car.
The responsibility is also on the purchaser of that puppy to INSIST on seeing health data of the parents, being given all the paperwork appropriate and a full five generation pedigree.
If everyone did their homework and checked they had all the information before making one of the most important purchases of their lives, breeders would have to comply.
At the moment, far too many get away with minimum information and even less support.