I don't think spanking kids is a good idea, since a lot of the time they start hitting back when they get big enough. But I don't have any kids yet, so I really do not have a leg to stand on when it comes to me telling you how to raise your kids.
The California state legislature does not have a leg to stand on either, yet a new bill is being proposed that would outlaw the spanking of small children in that state. Parents could face up to a year in jail if they are caught.
Whatever your thoughts on spanking are, to arrest an otherwise fit parent for a single spanking incident would be more traumatic for the child than the spanking itself.
Plus, have they stopped to consider the economic consequences? You can be sure that quite a few Disneyland vacations have been canceled already. I'm not that much worried about the welfare of kids in this case. How can they expect to enforce this law unless the spanking occurs in public? I'm worried about the poor guy who has to wear the Mickey Mouse costume in the desert heat.