The original thread question was "Will states enact nullification legislation?" and as I have shown many states already have , in terms of Real ID and Federal Laws concerning Marijuna, and even in the current as yet healthcare bill, states such as Arizona are set to pass nullification legislation on that bill as well. Yes. it's true is a bill is not constitutional it has NO force over the state under Article VI and likewise its true is it found to be constitutional, however if the Federal Govt. decides not to enforce such laws as is the case with Real ID then it has the same effect. The assertion that nullification is a myth is beyond the pale of logic , considering the over 200 years of history this nation has in such matters. One more thing to consider as well, case law such as with Marbury v. Madison enforces the constitutional authority of the Supreme Court to review if laws passed by congress are constitutional or not, and as we are debating constitutional issues here, I don't consider the father of the constitution and it's principle author to be a petulant child. Rather, it's author would have more to say than anyone else as to it's meanings.