 But it is now time to consider the third main objection to the harm argument. This objection, let us recall, is that making reparations to the present U.S. black population for the harms that slavery caused it is impossible because if slavery had never occurred the present U.S. black population would not exist. This problem is now known as the non-identity problem. This difficulty might seem to reappear in the revised harm argument just described. For although this argument does not call for compensating the present U.S. black population for the harms that slavery caused it, it may seem to call for compensating the present U.S. black population for the harms it suffers because of policies enacted and enforced before it was conceived. Given that these policies would have affected who was conceived in succeeding U.S. black populations, had they not occurred the present U.S. black population would not exist.