Also you must be aware that USA laws are quite complex with different state and federal laws. Moreover it's a constantly evolving common law jurisdiction. So the rules related to parenting have a clear reason for existence and might change in future. It does not make the kids worse off than other countries as each has their own problems.
Also in Asia I am talking about cities mentioned in my earlier post. Country or region is just too broad a brush to stereotype, even in Japan Sapporo is very different from Tokyo.