Strangely, we have been doing just the opposite of what would be reasonably expected. Threats are made but are rarely followed through on. This is absolutely not true in the Justice system. Once an infraction is triggered, there is little chance that the hard consequences dictated by law can be avoided. There is a great tolerance for minor infractions.
Parents tend to look the other way, if at all possible.
In fact, action will often be taken only when there is no other option. Just the opposite in the Justice system. The system pursues minor infractions because a legal defense is so expensive and will probably not be pursued. There is much forgiveness. Parents have great leeway in their punishments.