The strategy Gunny has proposed is solidly constitutional, and cleverly bypasses the sticky point preventing widespread adoption of measures that would invalidate unconstitutional federal laws. One caveat I would have with the idea, however, is that it doesn't eliminate the demagogues who distorted nullification in the first place, just maneuvers past their smear job on the term. Soooo, what's to stop these same people from also poisoning "non-pursuance" the same way they did nullification?
Getting past the sticky point is fine in the interim, just remember you still have to fight for the substance, and defend the substance of the idea, which was never faulty, that under the Constitution the states provide a check against the overreach of the federal government. The cult of the omnipotent state will fight this basic principle tooth and nail, in whatever rhetorical or tactical form we advance it.
Ultimately, they do not believe in limits on government power, or in checks against its overreach, no matter which part of the Constitution is cited to them. Switching sections or terminology merely delays, not disposes of the fundamental conflict.
Oh make no mistake, they will try and roadblock that route too, but
they aren't the ones we need to convince. Not only will their attempt at roadblocking it be way more difficult and consume more PR resources, but it will also be easier to overcome, and their own actions will show them up as liars and hypocrites. All three factors helping us to win over the actual people we need to win over.
First, it's more difficult and will consume more PR resources. People like John C. Calhoun never spoke in terms of "non-pursuance" so they don't have a history to easily distort. Without a ready reservoir of source-material, poisoning the well will become an order of magnitude more difficult. They will have to expend more resources because they will now have to make the lies up from scratch, and expend energy to justify their lies.
Second, it will be easier to overcome, in part because of their own efforts. They are the ones who have sown the seed that "Article VI trumps everything," so to the people they have managed to condition an Article VI argument will automatically "trump everything." They will be working against
their own conditioning, and so in part consuming themselves in a kind of mass cognitive dissonance that will open more minds to accept the truth about the real Constitutional division of powers.
Third, their most skilled apologists will have a thorough history of arguing for Article VI as contradicting the Tenth Amendment. When they step up to mock our Article VI argument, all we have to do is point to one of their articles from the past and ask, "Say, isn't this you a year ago arguing that the Article VI Supremacy Clause trumps everything else in the Constitution because it's Supreme? Have you changed your mind now?" Now they are in a Catch-22. If they have changed their mind, now Nullification becomes viable, but if they have not changed their minds they just contradicted their own argument. If they remain opposed in either case they look like hypocrites to everyone observing the debate.
So if we take this approach, they will have to consume and spend more resources to fight it, their objections will be easier to overcome, and by setting their own words against them they will come across like hypocrites.
All of this works to our advantage amongst the very group we need to convince -- the people too busy (or unmotivated) to study for themselves, who simply take on faith the word of others they believe more knowledgeable than themselves. That group, often derogatively referred to as the "Low Information Voter," make up the vast majority of voters in any election.