I suspect we're more concerned with the moral position here, than with finding a basis for actual liability. Statutes of limitation typically exist to a) limit the forensic disadvantage that would be caused by bringing a legal claim arising out of facts long since passed, and b) provide legal certainty. Neither consideration is particularly relevant when considering broader issues of intergenerational equity and affirmative action.
I think there's a very strong argument for some form of adjustment between the positions of person A and person B, if person A has been born into an advantageous position due to the exploitation of person B's ancestors, which has also caused person B to be born into a disadvantageous position. The question then is the extent to which you can trace advantage and disadvantage to America's history of slavery.
Of course, a direct penalty payable by person A into the bank account of person B would be pretty crude, and would fail to address the issues of advantage and disadvantage. But forms of government assistance, which ultimately place a higher net tax burden on person A, don't seem objectionable.
I think there's a very strong argument for some form of adjustment between the positions of person A and person B, if person A has been born into an advantageous position due to the exploitation of person B's ancestors, which has also caused person B to be born into a disadvantageous position. The question then is the extent to which you can trace advantage and disadvantage to America's history of slavery.
Of course, a direct penalty payable by person A into the bank account of person B would be pretty crude, and would fail to address the issues of advantage and disadvantage. But forms of government assistance, which ultimately place a higher net tax burden on person A, don't seem objectionable.