So let me offer this modest proposal: When a child receives government assistance, we should deduct the cost from his parents’ future Social Security benefits. If one parent fails to provide child support, we should deduct the cost from his Social Security benefits alone; otherwise, the parents split the cost. Administratively, this seems quite manageable. Of course, this modest proposal means that many deadbeat dads will have to endure late retirement, but that seems a lot fairer than burdening taxpayers.
That is from Bryan Caplan.