Is there a specific law or government regulation with regard to parenting and discipline that concerns you? Typically, parents are able to discipline their children as they see fit, with the exception of punishments that violate child endangerment laws or that constitute violence or abuse against children. The article you visited before posting your question provides authoritative advice on parenting styles and discipline strategies, but does not include government mandates with regard to punishment. Please consider adding more information to your question if there is a particular law that you'd like to discuss here JustAsk.
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