This is an interesting article on Spay-Neuter. Apparently, Florida tried to pass a mandatory Spay-Neuter bill. As most of you know, this would be a bad idea because it would just mean more money is wasted trying to enforce the bill. The money could of course instead be used to sterilise more cats.
People who cannot afford to sterilise will not be able to pay the fine should they be caught for having unsterilised cats of course. It would be better to allow people more resources to get their cats done.
It's interesting that in the US, they estimate that 82% of pet cats are sterilised. I strongly believe that if resources are made available to people cheaply, that more people will sterilise their pet cats. On the other hand, an estimated 3% of community cats are done. It's interesting to note that most kittens born are believed to be born to community cats - so that's where the problem lies.