Well, the point I was making is you go after the money, not the person. If I was to think like a lawyer then the answer is to sue everybody in sight and then sue a few extra people that you heard might have been in sight. The Judge can figure out at his own leisurely legal pace who pays who and how much.

I was not thinking of punishment as much as I was thinking about cost recovery, but punishment might be needed to reduce some of the abuse.
I think Hikermor's comments on that and on current policy are quite to the point.

As for the cleaning of the gene pool, well it seems there is more drift there than actual flushing. It only takes a slightly higher or lower reproductive rate for a genetic trait to dominate the population.
Besides that you can think of the fools in the same way as the bible says about the poor. They will always be with you.