Abstract
Why, and to what extent, must taxpayers share the costs of raising children with parents? The most influential argument over this question has been the public goods argument: Taxpayers must share costs with parents because and to the extent that child-rearing contributes toward public goods by helping to develop valuable human capital. However, political theorists have not examined the public goods argument in a context in which replacement migration is available: If replacement migration can provide valuable human capital more efficiently than child-rearing, can the public goods argument still justify a taxpayer obligation to share the costs of child-rearing? This article argues that there are importantly different versions of the public goods argument, and that on a plausible version of that argument, it can withstand the replacement migration challenge under most circumstances.
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