An interesting legal argument emerges in this Wall Street Journal piece about the impact of President Obama’s decision to suspend the employer mandate in ObamaCare. The writers– David B. Rivkin Jr. and Lee A. Casey — refer to the nut of the 2012 case NFIB v. Sebelius.

Throughout that litigation, the Obama administration portrayed the individual mandate as an “integral part of a comprehensive scheme of economic regulation” that included the employer insurance mandate, which was intended to give millions of Americans a way of meeting their new obligation to have health insurance. In other words, suspending the employer insurance mandate prevents the individual insurance mandate from working the way Congress intended.

Like the employer mandate, the individual mandate by law will take effect in January 2014 (unless the president postpones that as well). Individuals who will then have to buy their own health insurance will arguably have suffered an injury sufficient to give them standing to sue.

Once in court, these litigants can argue that the very integrated nature of the Affordable Care Act would make it unlawful to apply one part against them, while suspending another section. They can also argue that only Congress can determine whether, once a statute is fundamentally changed post-enactment, it should survive or fall.