Mine is "Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort." What's your's?
And since Davis, Lee, et.al. certainly waged war against the United States then I suspect you agree that they were indeed a traitorous lot.
Since the union of the sovereignty with the government, constitutes a state of absolute power, or tyranny, over the people, every attempt to effect such an union is treason against the sovereignty, in the actors; and every extension of the administrative authority beyond its just constitutional limits, is absolutely an act of usurpation in the government, of that sovereignty, which the people have reserved to themselves.
View of the Constitution of the United States, NOTE B, Preliminary Remarks
St. George Tucker
Treason against the United States is treason against the sovereign States, NOT actions against the federal government.