Complex sentence: Laws prohibiting "Holocaust denial" are maintained by many, but not all of the same jurisdictions that have these laws, but as they apply to individuals and involve criminal punishment, they are in all cases separate statutes.
Split into simpler sentences: Laws prohibiting "Holocaust denial" are maintained by many--but not all--of the same jurisdictions that have these laws. These laws apply to individuals and involve criminal punishment and therefore they are in all cases separate statutes.