Who gets reparations? Do mixed race people get them? If so, do only mixed race people with obvious dark skin get them? Do black people who are not descended from slaves get them? Once paid, will no more ever be asked for again? Will the subject be dropped entirely? Will reparations function as a "cleaning of the slate" for race relations? Once paid, will new generations of black people be owed reparations?
And who pays? What percentage of the white US population descended from slaves? Do all whites pay? Even the ones who descended from white men who fought to end slavery? What percentage of the whites who are descended from slave owners are piss poor and have not actually benefited in any meaningful way from their lineage of slave ownership?
There are so many factors that just make reparations seem impossible even if you're in favor of it from a moral standpoint. From where I'm standing, the only thing we can logistically do today to help black people is to stop the government from incentivizing the destruction of their families through welfare and to stop locking up fathers for petty drug related crimes. Those things will also be difficult in today's highly polarized political landscape, but it is really the only thing I can think of that is possible, fair, and will improve the situation of black people in the US.