I think it's a great idea. I wish more states would take the same initiative.
 
Under the bill, you can get a letter from your vet stating that your dog can't be spayed or neutered until nine months instead of the six months in the bill. This would be great for those of us with toy dogs who may need to wait until they are a little older to remove retained baby teeth or wait until they get a little bigger. 
Responsible breeders will have no problem getting an "intact permit" under the bill. If a breeder has a federal tax ID #, business license and a sellers permit to do business as a breeder, she would qualify. Breeders who belong to a recognized registry like the AKC and are involved with showing would also qualify. People breeding dogs, even mixed breed dogs, to be used in law enforcement, fire service, search and rescue, or medical service activities would qualify for the permit, too. 
The only people who be impacted by this bill are backyard/hobby breeders who are a huge part of pet over population in this country, much, much more than puppy mills are. Considering the fact that 25% of all pets turned into shelters are purebred, it would greatly reduce the amount of animals being euthanized.  
If anyone wants to read the actual bill, not all the websites with their spin on it, you can go here:  
http://www.leginfo.ca.gov/pub/07-08/...d_sen_v92.html