As with Abortion, So as with Slavery

So this is a clip of Obama's thoughts on the issue of abortion. He doesn't deny that this is a sensitive and moral issue. But, he believes that women can make the right decision. If you would take that reasoning to a former issue that America faced Obama might not be on the ballot, but in chains. I remember the confederates thinking that States had the moral judgement to eradicate or support slavery. I wonder how Obama would respond to this.