Now seeing as how Chase ruled that secession was legal,

Please cite where Chase ruled that secession was legal. I've never read that one my friend. Nor has anyone else yet posted where any Supreme Court Justice said so at the time. Only the views of other people. You know what they say about that. Let's not dance around. Can you or your two friends quote A Supreme Court Justice in the Chase Court saying secession was legal? No, you can't. Have you yet produced a copy of the pardon given Davis? No, you haven't.

You can't do the first because no just instrument exist. You can't do the second, because, I believe, you choose not to.