They could, but will they? Wouldn't the sleeping giant have awoken, if it still existed? The entire constitution has been officially nullified except tiny parts of the 1st and 2nd amendments. I think the voting system is totally controlled. I really don't think there's any reason to try and salvage it. I think people who have a romantic or emotional attachment to the idea might be part of the problem, because the elites know they can be used to help keep the evil alliance going. Likely would be wise to kill that beast. States can always work together voluntarily if they want to pool resources and power. No need to get big daddy Sam to violently hold everybody together at all costs.