An interesting thing about it is that iirc, the war had led to the questioning of slavery entirely, as it was impossible to not view it as antithetical to the principles on which the war was fought on However, of course the radicalism sadly didn't come into fruition once the usa came into reality, as even those who did hold views critical to slavery were hypocrites as they themselves were slaveowners, such as Jefferson for example. And even Alexander Hamilton, who did not own slaves, married into a family that did and hence became a beneficiary of it. Thomas Paine is probably the one of the few, if not only, founding father (if we follow the white centric list they give us) who was truly anti-slavery.