I'll admit to you that when I first read about this, I was cheering Idaho on. It seemed both heroically defiant and strategically shrewd. The federal government should not be telling states how to fashion their health care laws, and the manner in which ObamaCare does so is foolish to an extreme.
So what should a state do? Simple: Pass the sane, sensible laws you should have every right to pass, then sit there and dare the federal government to stop you. You've got an administration that probably agrees with you on the merits, so why not essentially nullify ObamaCare by defying it. Let the Trump Administration exercise "prosecutorial discretion" as it were, and just like that, you've established the precedent that states are free to flout the law.