fertility rights
i think out of the box. so the other day i was thinking about ethical population control. forced abortion and infanticide are horrible concepts. let's go elsewhere. we could sterilize parents after they've had their quota. something like everyone has the right to replace themselves. and i suppose you could buy sell and trade these child rights if you wanted more or less children than the quota. that might work. the government could raise money by selling extra rights. but then i thought of a wacky variation. you can have as many children as you want. but children in excess of the quota are sterilized by age 10. parents get to pick which ones. if the first kid dies in an accident there can be another fertile sibling. this wouldn't be an option if the parents themselves were sterilized. it also gives families that have surpises time to acquire a fertility right for their extra child.