Reparations for slavery were paid by the blood of 320,000 white Union soldiers who gave their lives in the war. I won't try to argue that all or even most fought to liberate the enslaved. Doesn't matter. Without their sacrifice slavery would not have ended.

Now, if you want to have a conversation about reparations for decades of Jim Crow, Black Laws, razed communities, stolen generational wealth, exclusion from programs that redistributed wealth (e.g. the GI Bill), then I'm right there. But then we have the issue of "foundational". Is a black person who came to the US in say 1900, never experiencing slavery, but the disabilities that prevented their ability to generate the same wealth as white people ... are they foundational?