"I'm not talking about Northern motivations. "
That's kind of a major detail, since the decision of whether or not there ought to be a Civil War was entirely Lincoln's.
"Read "Apostles of Disunion" by Charles Dew.... he details how there were secession commissioners that were sent by the states that seceded first to recruit the other states"
I've added it to my Amazon Wishlist, but at this rate, I won't get to it until 2014. I don't doubt it happened, and I don't doubt these commissioners used race as part of their schtick (as Lincoln did in arguing for racial separatism and deporting freed blacks to Africa). But was it their sole argument? I notice you're completely avoiding the issue of tariffs here, and the corporate welfare which flowed from southern states to northern businesses - does the book you cite do that, too? As for why they never went to any northern states, well, I'd bet that had something to do with the fact that the northern states by and large had none of the same grievances the southern states did.
"The South seceded over slavery. Again, if it was about states rights, why was there no more protection of states rights written into the CS Constitution? Why didn't South Carolina insist on nullification being placed into it as explicit law?"
Well, you've inspired me to actually sit down and read the Confederate Constitution, and there are a number of HUGE changes vis a vis the US Constitution that did indeed reflect Southern grievances that had nothing to do with perpetuating slavery. Like "no bounties shall be granted from the Treasury; nor shall any duties or taxes on importations from foreign nations be laid to promote or foster any branch of industry". I'm fairly sure Lincoln the railroad lobbyist would be quick to tell us that particular line isn't in the US Constitution. Along the same lines, there's "the power to regulate commerce... shall [n]ever be construed to delegate the power to Congress to appropriate money for any internal improvement intended to facilitate commerce; except for the purpose of furnishing lights, beacons, and buoys, and other aids to navigation upon the coasts, and the improvement of harbors and the removing of obstructions in river navigation; in all which cases such duties shall be laid on the navigation facilitated thereby as may be necessary to pay the costs and expenses thereof." Gee, I wonder what *that* is about. Once again, perhaps Mr. Lincoln the Railroad Lobbyist can tell us. Could it have had something to do with all the complaining - probably unfounded - about the Southern States being taxed for "internal improvements" that always seemed to benefit wealthy northern corporations? Also, if the Confederacy was all gung ho on slavery, why did its constitution explicitly outlaw the slave trade? Ah, and look here - a 2/3 requirement for levying duties on exports! *AND* a 2/3 requirement for most appropriations! That certainly explains the lack of a nullification clause (assuming it isn't in the second half here somewhere) - the Confederacy was going to be so hamstrung by gridlock on any controversial issue there would've been no need. There, that's four major differences that have nothing to do with maintaining slavery, and I'm not even halfway through. Have you ever actually read this thing yourself, or have you always been relying on people who told you it was essentially the same as the US Constitution (as I confess I always did until about 45 minutes ago)?
"There is very little material difference in my mind between those that fought for the South, and the German-Americans who joined the SS. Or John Walker Lindh. Or any other traitors."
Does that mean you think the vast majority of the white population of the South (and even some blacks who fought for the Confederacy) should've been executed for treason or sentenced to lengthy prison terms? Do you feel a similar fate should befall all of us "Confederate Sympathizers"?