Yes, but we both know that the Founders were not talking about slaves. One can try to construe it that way, but it doesn't work. And what makes you think the CSA rejected this principle? Because they had slaves? All the colonies had slaves when the Declaration was passed, were they rejecting the principle? Sure, most recognized slavery as an evil, but so did most Southerners. Most Southerners were in favor of gradual emancipation. For a long time the South had more abolition societies than the North. Many Southerners freed their slaves. Washington did. My great x5 grandpa did. Many others had no slaves at all, such as Generals Lee, A. P. Hill, J. Johnston, and J. E. B. Stuart. Do you think they were somehow fighting for slavery? Does that make logical sense to you?
Your attempt at trying to make the issue that 6% of the white population had slaves a reason why the South could not form a legitimate government is lame. Here is what Lincoln had to say about secession:
"Any people anywhere, being inclined and having the power, have the right to rise up and shake off the existing government and to form one that suits them better. Nor is this right confined to cases in which the people of an existing government may choose to exercise it. Any portion of such people that can, may make their own of such territory as they inhabit. More than this, a majority of any portion of such people may revolutionize, putting down a minority intermingling with or near them who oppose their movement. "
Lincoln on the floor of Congress, 13 January 1848 Congressional Globe, Appendix 1st Session 30th Congress, page 94
I don't think Lincoln intended to propose that a minority has no right to fight back against such a revolution.
Or do you propose that if liberals manage to cobble together a 51% vote to get rid of the Constitution, the rest of us have no right to resist them?
BTW, your 6% number is wildly inaccurate. That is the percent of the white population that held title to slaves. Of course, when a family owned slaves title was held by the head of the house, but we wouldn't say his wife and children were not also slaveowners.
Actual percentage of white families that owned slaves in 1860 in all slave states was 26%. The percentage ranged from 3% in DE to over 50% in SC.
http://www.civilwarhome.com/slavery.htm